{"id":640,"date":"2017-10-08T14:19:19","date_gmt":"2017-10-08T19:19:19","guid":{"rendered":"http:\/\/bluegalaxy.info\/codewalk\/?p=640"},"modified":"2018-07-05T19:50:18","modified_gmt":"2018-07-06T00:50:18","slug":"python-and-javascript-a-comparison-of-the-language-basics","status":"publish","type":"post","link":"https:\/\/bluegalaxy.info\/codewalk\/2017\/10\/08\/python-and-javascript-a-comparison-of-the-language-basics\/","title":{"rendered":"Python and JavaScript: A comparison of the language basics"},"content":{"rendered":"

In this table I will compare some basic programming syntax and conventions between the Python and JavaScript programming languages.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Programming element<\/th>\nPython<\/th>\nJavaScript<\/th>\n<\/tr>\n
Creating a variable that contains an int:<\/strong><\/td>\nage = 25<\/code><\/td>\nvar age = 25;<\/code><\/td>\n<\/tr>\n
Creating a variable that contains a float:<\/strong><\/td>\nprobability = 0.62<\/code><\/td>\nvar probability = 0.62;<\/code><\/td>\n<\/tr>\n
Creating a variable that contains a string:<\/strong>
\nPython supports single, double, and triple quotes.<\/td>\n		state = 'North Dakota'<\/code>
\nstate = \"North Dakota\"<\/code>
\nstate = \"\"\"North Dakota\"\"\"<\/code><\/td>\n		var state = \"North Dakota\";<\/code><\/td>\n<\/tr>\n
Denoting string literals:<\/strong>
\nPython uses an ‘r’ in front of the string.<\/td>\n		path = r'\\path\\to\\some\\files'<\/code>
\npath = r\"\\path\\to\\some\\files\"<\/code>
\npath = r\"\"\"\\path\\to\\some\\files\"\"\"<\/code><\/td>\n		No string literals. Special characters must be escaped.<\/td>\n<\/tr>\n
String Concatenation:<\/strong><\/td>\ngreeting = \"Hello\" + \" world\"<\/code><\/p>\n

greeting = str1 + str2<\/code><\/td>\n

var greeting = \"Hello\" + \" world\";<\/code><\/p>\n

var greeting = str1 + str2;<\/code><\/td>\n<\/tr>\n

Creating a list or array:<\/strong><\/td>\nfruit_list = ['apple', 'banana', 'cherry']<\/code><\/td>\nvar fruit_list = [\"apple\", \"banana\", \"cherry\"];<\/code><\/td>\n<\/tr>\n
Getting the length of a list or array:<\/strong><\/td>\nlength = len(fruit_list)<\/code><\/td>\nvar length = fruit_list.length;<\/code><\/td>\n<\/tr>\n
Python dictionary vs. JavaScript object:
\n<\/strong><\/td>\n		fruit = {'a':'apple', 'b':'banana', 'c':'cherry'}<\/code><\/td>\nvar fruit = { \"a\": \"apple\", \"b\": \"banana\", \"c\": \"cherry\" };<\/code><\/td>\n<\/tr>\n
Getting keys from a dictionary or object:<\/strong><\/td>\nfruit_keys = fruit.keys()<\/code><\/td>\nvar fruit_keys = Object.keys(obj);<\/code><\/p>\n

var fruit_keys = [index for (index in fruit)];<\/code><\/td>\n<\/tr>\n

Getting values from a dictionary or object:<\/strong><\/td>\nfruit_values = fruit.values()<\/code><\/td>\nvar fruit_values = [fruit[index] for (index in fruit)];<\/code><\/td>\n<\/tr>\n
Adding key-value pairs to a dictionary or object:<\/strong><\/td>\nfruit['o'] = 'orange'<\/code><\/td>\nfruit[\"o\"] = \"orange\";<\/code><\/p>\n

var o = \"o\";<\/code>
\nfruit.o = \"orange\";<\/code><\/td>\n<\/tr>\n

Deleting key-value pairs from a dictionary or object:<\/strong><\/td>\ndel fruit['c']<\/code><\/td>\nvar key = \"c\";<\/code>
\ndelete fruit[key];<\/code>delete fruit[\"c\"];<\/code><\/p>\n

delete fruit.c;<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Python was invented in the late 1980s (1989) by Guido van Rossum. Ideas for Python were adopted from Modula-3 and Lisp.<\/p>\n

JavaScript first appeared in web browsers in 1995 and was written by Brendan Eich, who worked for Mosaic Netscape, while creating the Netscape browser code named “Mozilla”. JavaScript was influenced by programming languages such as Self and Scheme, and was originally named LiveScript. It is thought that it was rebranded “JavaScript” as a marketing ploy by Netscape<\/a> to give JavaScript the cachet of what was then the hot new programming language “Java”. However, JavaScript and Java are completely distinct programming languages with little in common.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

In this table I will compare some basic programming syntax and conventions between the Python and JavaScript programming languages. Programming element Python JavaScript Creating a variable that contains an int: age = 25 var age = 25; Creating a variable that contains a float: probability = 0.62 var probability = 0.62; Creating a variable that … Continue reading Python and JavaScript: A comparison of the language basics<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[45,4],"class_list":["post-640","post","type-post","status-publish","format-standard","hentry","category-javascript-language","tag-javascript","tag-python"],"_links":{"self":[{"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/posts\/640","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/comments?post=640"}],"version-history":[{"count":23,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/posts\/640\/revisions"}],"predecessor-version":[{"id":2104,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/posts\/640\/revisions\/2104"}],"wp:attachment":[{"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/media?parent=640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/categories?post=640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/tags?post=640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}