{"id":834,"date":"2020-08-02T20:12:30","date_gmt":"2020-08-02T20:12:30","guid":{"rendered":"https:\/\/www.lzych.pl\/?p=834"},"modified":"2022-01-27T22:10:53","modified_gmt":"2022-01-27T21:10:53","slug":"python-tutorial-free-course-for-beginners-4-conditional-statements","status":"publish","type":"post","link":"https:\/\/www.lzych.pl\/en\/python-tutorial-free-course-for-beginners-4-conditional-statements\/","title":{"rendered":"Python &#8211; bezp\u0142atny kurs dla pocz\u0105tkuj\u0105cych #4, Instrukcje warunkowe"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"834\" class=\"elementor elementor-834\" data-elementor-settings=\"[]\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-15eb5fe elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"15eb5fe\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f016d95\" data-id=\"f016d95\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cc26038 elementor-widget elementor-widget-text-editor\" data-id=\"cc26038\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\tHej! Czasami chcemy, aby jaka\u015b cze\u015b\u0107 naszego kodu uruchamia\u0142a si\u0119 tylko i wy\u0142\u0105cznie wtedy kiedy zostanie spe\u0142niony jaki\u015b warunek. Jest to super przydatne, poniewa\u017c dzi\u0119ki temu mo\u017cemy doda\u0107 logik\u0119.\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6fe601c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6fe601c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-41ec998\" data-id=\"41ec998\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-21e9eb3 elementor-widget elementor-widget-text-editor\" data-id=\"21e9eb3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Chcemy pobra\u0107 imi\u0119 i nast\u0119pnie je\u017celi sk\u0142ada si\u0119 z mniej ni\u017c 6 liter, wypiszemy informacj\u0119, \u017ce jest kr\u00f3tkie, a je\u017celi ma 6 lub wi\u0119cej, to nie zrobimy nic.<\/span><\/p><p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Skorzystamy do tego z funkcji\u00a0<\/span><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\"><strong>len()<\/strong><\/span><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">\u00a0kt\u00f3ra policzy nam ilo\u015b\u0107 liter &#8211; czyli na przyk\u0142ad len(&#8217;John&#8217;) zwr\u00f3ci wynik 4.<\/span><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-588b42e\" data-id=\"588b42e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-96e5f68 elementor-widget elementor-widget-text-editor\" data-id=\"96e5f68\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># we ask for the name\nname = input('Your name: ')\n\n# if name has less than 6 letters we print a message\nif len(name) &lt; 6:\n    # pay attention to the indentation!\n    # this code is in the 'if' scope\n    print('Your name is short')\n\n# code below is outside if scope\nprint('program finished')\n<\/pre>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8b43800 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8b43800\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6b9355b\" data-id=\"6b9355b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-810ce08 elementor-widget elementor-widget-heading\" data-id=\"810ce08\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Warunki<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a374886 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a374886\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-aff2c98\" data-id=\"aff2c98\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-5a45aba elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5a45aba\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-fa2486e\" data-id=\"fa2486e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5bd677f elementor-widget elementor-widget-text-editor\" data-id=\"5bd677f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Istotnym w\u0105tkiem przy korzystaniu z if&#8217;a s\u0105 operatory. U\u017cycie ich zwraca warto\u015b\u0107 boolean, czyli:<\/span><\/p><ul><li><span style=\"font-family: 'var e-global-typography-text-font-family', sans-serif;\">True &#8211; wtedy to co znajduje si\u0119 w \u015brodku if&#8217;a zostanie wykonane,<\/span><\/li><li><span style=\"font-family: 'var e-global-typography-text-font-family', sans-serif;\">False &#8211; nie zostanie wykonane.<\/span><\/li><\/ul><table style=\"width: 100%;\"><tbody><tr><th>Warunek<\/th><th>Znaczenie<\/th><\/tr><tr><td>&gt;<\/td><td>wi\u0119kszy<\/td><\/tr><tr><td>&gt;=<\/td><td>wi\u0119kszy lub r\u00f3wny<\/td><\/tr><tr><td>&lt;<\/td><td>mniejszy<\/td><\/tr><tr><td>&lt;=<\/td><td>mniejszy lub r\u00f3wny<\/td><\/tr><tr><td>==<\/td><td>r\u00f3wny<\/td><\/tr><tr><td>&lt;=<\/td><td>r\u00f3\u017cny<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-dc2517a\" data-id=\"dc2517a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b91507f elementor-widget elementor-widget-html\" data-id=\"b91507f\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div style=\"width:100%;height:0;padding-bottom:53%;position:relative;\"><iframe loading=\"lazy\" src=\"https:\/\/giphy.com\/embed\/z7Rtz6bPxpQ2c\" width=\"100%\" height=\"100%\" style=\"position:absolute\" frameborder=\"0\" class=\"giphy-embed\" allowfullscreen><\/iframe><\/div><p><a href=\"https:\/\/giphy.com\/gifs\/mrw-someone-javert-z7Rtz6bPxpQ2c\">via GIPHY<\/a><\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f3a965f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f3a965f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6ea4d35\" data-id=\"6ea4d35\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-38b4eaa elementor-widget elementor-widget-heading\" data-id=\"38b4eaa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Operacje boolowskie - and, or, not<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-74cb006 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"74cb006\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-1c152d7\" data-id=\"1c152d7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7d58dab elementor-widget elementor-widget-text-editor\" data-id=\"7d58dab\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Warunk\u00f3w mo\u017ce by\u0107 wiele, mo\u017cemy je \u0142\u0105czy\u0107 lub odwraca\u0107 ich warto\u015b\u0107 zale\u017cnie od potrzeb. Do dyspozycji mamy:<\/span><\/p><ul><li><span style=\"font-family: 'var e-global-typography-text-font-family', sans-serif;\"><strong>and<\/strong><\/span><span style=\"font-family: 'var e-global-typography-text-font-family', sans-serif;\"> &#8211; \u0142\u0105czy warunki, oba z nich musz\u0105 by\u0107 prawdziwe (True), aby to co znajduje si\u0119 w \u015brodku si\u0119 wykona\u0142o,<\/span><\/li><li><strong>or<\/strong><span style=\"font-family: 'var e-global-typography-text-font-family', sans-serif;\"> &#8211; \u0142\u0105czy warunki, tylko jeden z nich musi by\u0107 prawdziwy, inne mog\u0105 by\u0107 False,<\/span><\/li><li><strong>not<\/strong><span style=\"font-family: 'var e-global-typography-text-font-family', sans-serif;\">\u00a0negacja, odwraca warto\u015b\u0107 warunku, je\u017celi mieli\u015bmy False to otrzymamy True i odwrotnie.<\/span><\/li><\/ul><p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Teraz kilka przyk\u0142ad\u00f3w.<\/span><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-4f5f164\" data-id=\"4f5f164\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0503fb4 elementor-widget elementor-widget-text-editor\" data-id=\"0503fb4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">\n# temperature in celsius\ntemperature = 30\n# chance for rain\nrain_chance = 20\n\n# both cases needs to be True\nif temperature > 25 and rain_chance > 50:\n    # remember about nesting!\n    print('1. It is hot and it will rain')\n# abbreviation of: else if\n# only one of these cases needs to be True\n# the second one can be False\nelif temperature > 25 or rain_chance > 50:\n    print('2. It is hot or it may rain')\n# if none of our cases above was executed\n# the code below else will run\nelse:\n    # notice that I used \\ sign to escape the end of sting\n    # it allows to continue writing more texr after won\n    print('3. It is not hot and probably won\\'t rain')\n\n# it's outside the scope and will always be printed\nprint('Program has finished')\n\n<\/pre>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cedffef elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cedffef\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7adecd2\" data-id=\"7adecd2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9a1722c elementor-widget elementor-widget-heading\" data-id=\"9a1722c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Ternary operator<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d26df9f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d26df9f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-410df63\" data-id=\"410df63\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5f6c09d elementor-widget elementor-widget-text-editor\" data-id=\"5f6c09d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Warto wspomnie\u0107 o tak zwanym operator tr\u00f3jsk\u0142adnikowy. Jest cz\u0119sto spotykany skr\u00f3t, kt\u00f3ry pozwala na warunku w jednej linii, zamiast pisania if-else zajmuj\u0105cego si\u0119 co najmniej kilka, co czyni nasz kod zwyczajnie kr\u00f3tszym.<\/span><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd229bc elementor-widget elementor-widget-text-editor\" data-id=\"fd229bc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">\n# value_if_true if condition else value_if_false\n\nis_day = True\nstate = 'day' if is_day else 'night'\n<\/pre>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6f6add2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6f6add2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f9b1895\" data-id=\"f9b1895\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-17bfa52 elementor-widget elementor-widget-heading\" data-id=\"17bfa52\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u0106wiczenie<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7a0e1b8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7a0e1b8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-8b1e2ed\" data-id=\"8b1e2ed\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1a8cbd5 elementor-widget elementor-widget-text-editor\" data-id=\"1a8cbd5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Dzisiejsze \u0107wiczenia b\u0119dziemy pisa\u0107 wsp\u00f3lnie<\/span><\/p><p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Zadanie polega na stworzeniu prostego kalkulatora, kt\u00f3ry obs\u0142uguje dodawanie, odejmowanie, dzielenie i mno\u017cenie. Typ operacji jak i liczby pobierane maj\u0105 by\u0107 za pomoc\u0105 funkcji input(). Je\u017celi wpisana zostanie nieprawid\u0142owa akcja, to zostanie wy\u015bwietlona informacja, \u017ce nie mo\u017cna jej wykona\u0107.<\/span><\/p><p><span style=\"font-family: var e-global-typography-text-font-family, Sans-serif;\">Zaczn\u0119, a Twoim zadaniem b\u0119dzie doko\u0144czenie funkcjonalno\u015bci. Pami\u0119taj, \u017ce je\u017celi chcesz, to mo\u017cesz te\u017c go oczywi\u015bcie rozbudowa\u0107 jeszcze bardziej.<\/span><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-e6e5a82\" data-id=\"e6e5a82\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f19555a elementor-widget elementor-widget-html\" data-id=\"f19555a\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div style=\"width:100%;height:0;padding-bottom:56%;position:relative;\"><iframe loading=\"lazy\" src=\"https:\/\/giphy.com\/embed\/yoJC2COHSxjIqadyZW\" width=\"100%\" height=\"100%\" style=\"position:absolute\" frameborder=\"0\" class=\"giphy-embed\" allowfullscreen><\/iframe><\/div><p><a href=\"https:\/\/giphy.com\/gifs\/lastweektonight-hbo-john-oliver-last-week-tonight-yoJC2COHSxjIqadyZW\">via GIPHY<\/a><\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a3f89ad elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a3f89ad\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6fd587b\" data-id=\"6fd587b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-62ab272 elementor-widget elementor-widget-text-editor\" data-id=\"62ab272\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">\n# Calculator\n\nprint('Please write the action you want to execute: +, -, * or \/')\naction = input('Action: ')\n\n# we will use it for validation\nallowed_actions = '+-*\/'\n\n# very simple validation to check if value we received may be used\n# pay attention that we can receive also value like +- which also doesn't make sense\nif action not in allowed_actions:\n    print('Unknown action, program is terminated')\n    # we finish our script here and code below won't be executed\n    quit()\n\nnumber_1 = int(input('Number 1: '))\nnumber_2 = int(input('Number 2: '))\n\nif action == '+':\n    print(f'Result: {number_1 + number_2}')\n<\/pre>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-571e95a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"571e95a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ff98e09\" data-id=\"ff98e09\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-094907e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"094907e\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d9b7a82 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d9b7a82\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1afd6cd\" data-id=\"1afd6cd\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1f67e82 elementor-widget elementor-widget-text-editor\" data-id=\"1f67e82\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><span style=\"color: #7a7a7a;\"><span style=\"font-family: Roboto, sans-serif;\"><span style=\"font-size: medium;\">Po tej lekcji musisz wiedzie\u0107, jak zaimplementowa\u0107 logik\u0119 w kodzie przy u\u017cyciu r\u00f3\u017cnych operator\u00f3w. Tw\u00f3j kalkulator r\u00f3wnie\u017c powinien by\u0107 sko\u0144czony \ud83d\ude09<\/span><\/span><\/span><\/p><p><span style=\"color: #7a7a7a;\"><span style=\"font-family: Roboto, sans-serif;\"><span style=\"font-size: medium;\">Nie zapomnij polubi\u0107\u00a0<\/span><\/span><\/span><a href=\"https:\/\/www.facebook.com\/lz.programming.courses\"><span style=\"color: #7a7a7a;\"><span style=\"font-family: Roboto, sans-serif;\"><span style=\"font-size: medium;\"><strong>stron\u0119 na facebooku<\/strong><\/span><\/span><\/span><\/a><span style=\"color: #7a7a7a;\"><span style=\"font-family: Roboto, sans-serif;\"><span style=\"font-size: medium;\">\u00a0i zapisa\u0107 si\u0119 do\u00a0<\/span><\/span><\/span><a href=\"https:\/\/www.lzych.pl\/en\/pl\/blog\/\"><span style=\"color: #7a7a7a;\"><span style=\"font-family: Roboto, sans-serif;\"><span style=\"font-size: medium;\"><strong>newsletter&#8217;a<\/strong><\/span><\/span><\/span><\/a><span style=\"color: #7a7a7a;\"><span style=\"font-family: Roboto, sans-serif;\"><span style=\"font-size: medium;\"><strong>\u00a0<\/strong><\/span><\/span><\/span><span style=\"color: #7a7a7a;\"><span style=\"font-family: Roboto, sans-serif;\"><span style=\"font-size: medium;\">aby dosta\u0107 informacj\u0119 o kolejnych \u015bwietnych lekcjach!<\/span><\/span><\/span><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fea3979 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"fea3979\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/www.lzych.pl\/en\/python-tutorial-free-course-for-beginners-5-loops\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Nast\u0119pna lekcja<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Hej! Czasami chcemy, aby jaka\u015b cze\u015b\u0107 naszego kodu uruchamia\u0142a si\u0119 tylko i wy\u0142\u0105cznie wtedy kiedy zostanie spe\u0142niony jaki\u015b warunek. Jest to super przydatne, poniewa\u017c dzi\u0119ki temu mo\u017cemy doda\u0107 logik\u0119. Chcemy pobra\u0107 imi\u0119 i nast\u0119pnie je\u017celi sk\u0142ada si\u0119 z mniej ni\u017c 6 liter, wypiszemy informacj\u0119, \u017ce jest kr\u00f3tkie, a je\u017celi ma 6 lub wi\u0119cej, to nie [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[22],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.5.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python - bezp\u0142atny kurs dla pocz\u0105tkuj\u0105cych #4, Instrukcje warunkowe - \u0141ukasz Zych<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lzych.pl\/en\/python-tutorial-free-course-for-beginners-4-conditional-statements\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python - bezp\u0142atny kurs dla pocz\u0105tkuj\u0105cych #4, Instrukcje warunkowe - \u0141ukasz Zych\" \/>\n<meta property=\"og:description\" content=\"Hej! Czasami chcemy, aby jaka\u015b cze\u015b\u0107 naszego kodu uruchamia\u0142a si\u0119 tylko i wy\u0142\u0105cznie wtedy kiedy zostanie spe\u0142niony jaki\u015b warunek. Jest to super przydatne, poniewa\u017c dzi\u0119ki temu mo\u017cemy doda\u0107 logik\u0119. 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