{"id":3331,"date":"2014-12-05T10:59:08","date_gmt":"2014-12-05T10:59:08","guid":{"rendered":"http:\/\/blog.bachi.net\/?p=3331"},"modified":"2018-09-22T18:36:30","modified_gmt":"2018-09-22T18:36:30","slug":"python-3-4","status":"publish","type":"post","link":"https:\/\/blog.bachi.net\/?p=3331","title":{"rendered":"Python 3"},"content":{"rendered":"

Official Python Documentation<\/a><\/p>\n

Python3 Tutorial<\/h3>\n

Python Concepts\/Numbers<\/a><\/p>\n

type<\/h4>\n
\r\n>>> type(6)\r\n<class 'int'>\r\n\r\n>>> type(6.4)\r\n<class 'float'>\r\n \r\n>>> type('6.4')\r\n<class 'str'>\r\n\r\n>>> type(b'6.4')\r\n<class 'bytes'>\r\n\r\n>>> type(['6.4'])\r\n<class 'list'>\r\n<\/pre>\n
print<\/h4>\n
print<\/a>
\nFormatted Output<\/a>
\nPEP 378 — Format Specifier for Thousands Separator<\/a><\/p>\n
\r\n### comma separated list of values\r\n# sep=" " -> separated by blanks (default behaviour)\r\n>>> print(q, p, p * q)\r\n459 0.098 44.982\r\n\r\n>>> print(q, p, p * q, sep=",")\r\n459,0.098,44.982\r\n\r\n>>> print(q, p, p * q, sep=" ! ")\r\n459 ! 0.098 ! 44.982\r\n\r\n# string concatenation\r\n>>> print(str(q) + " " + str(p) + " " + str(p * q))\r\n459 0.098 44.982\r\n\r\n### The Old Way or the non-existing printf and sprintf\r\n>>> print('Art: %5d, Price per Unit: %8.2f' % (453, 59.058))\r\nArt:   453, Price per Unit:    59.06\r\n\r\n>>> print("%#5x" % 12336)\r\n0x3030\r\n\r\n### The Pythonic Way: The string method "format"\r\n>>> print('Art: {0:5d}, Price per Unit: {1:8.2f}'.format(453, 59.058))\r\nArt:   453, Price per Unit:    59.06\r\n\r\n>>> print('Art: {a:5d}, Price per Unit: {b:8.2f}'.format(a=453, b=59.058))\r\nArt:   453, Price per Unit:    59.06\r\nArt:   453, Price per Unit:    59.06\r\n\r\n<\/pre>\n
locale<\/h4>\n
Fastest way to thousands-commafy large numbers in Python\/PyPy<\/a>, 13 October 2012<\/p>\n
Python locale error: unsupported locale setting<\/a>
\nWhat is the correct way to set Python’s locale on Windows?<\/a>
\nLanguage Strings<\/a>
\nVS2017: setlocale<\/a>
\n.NET Standard Numeric Format Strings<\/a><\/p>\n\n\n
\u2018n\u2019<\/td>\nNumber. This is the same as \u2018d\u2019, except that it uses the current locale setting to insert the appropriate number separator characters.<\/td>\n<\/tr>\n<\/table>\n
\r\n# On Windows 10\r\n>>> print(locale.getlocale())\r\n('German_Switzerland', '1252')\r\n\r\n>>> locale.setlocale(locale.LC_ALL, 'german-swiss')\r\n'German_Switzerland.1252'\r\n\r\n>>> x = 1234567890\r\n>>> print("The value is {0:6,n}".format(x))\r\nTraceback (most recent call last):\r\n  File "<stdin>", line 1, in <module>\r\nValueError: Cannot specify ',' with 'n'.\r\n\r\n>>> print("The value is {0:6n}".format(x))\r\nThe value is 1234567890\r\n\r\n<\/pre>\n
Different Tutorials<\/h3>\n
An Introduction to Python Lists<\/a>
\nPython – Command Line Arguments<\/a><\/p>\n
IP-Address Validation<\/h4>\n
Regular Expressions in Python for dissecting IP<\/a><\/p>\n
\r\nfirst, second, third, fourth = str(ipaddy).split('.')\r\n<\/pre>\n
How to validate IP address in Python?<\/a><\/p>\n
\r\n>>> import ipaddress\r\n\r\n>>> ipaddress.ip_address('127.0.0.1')\r\nIPv4Address('127.0.0.1')\r\n\r\n>>> ipaddress.ip_address('277.0.0.1')\r\nTraceback (most recent call last):\r\n  File "<stdin>", line 1, in <module>\r\n  File "\/usr\/lib\/python3.3\/ipaddress.py", line 54, in ip_address\r\n    address)\r\nValueError: '277.0.0.1' does not appear to be an IPv4 or IPv6 address\r\n\r\n>>> ipaddress.ip_address('foobar')\r\nTraceback (most recent call last):\r\n  File "<stdin>", line 1, in <module>\r\n  File "\/usr\/lib\/python3.3\/ipaddress.py", line 54, in ip_address\r\n    address)\r\nValueError: 'foobar' does not appear to be an IPv4 or IPv6 address\r\n<\/pre>\n
21.28. ipaddress \u2014 IPv4\/IPv6 manipulation library<\/a>
\n`netaddr` is a Python library for representing and manipulating network addresses<\/a>
\nnetaddr 0.7.11 documentation<\/a>
\nIP Address Tutorial<\/a> (21.08.2009)
\npython 3: ipaddr\/netaddr modules<\/a><\/p>\n
String to Number<\/h3>\n
Convert strings to int or float in python 3?<\/a><\/p>\n
\r\ntry:\r\n    integer = int(input('something: '))\r\n    print('2 + {} = {}'.format(integer, integer + 2))\r\nexcept ValueError as e:\r\n    print("ooops - you didn't enter something I could make an int of...")\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
Official Python Documentation Python3 Tutorial Python Concepts\/Numbers type >>> type(6) <class ‘int’> >>> type(6.4) <class ‘float’> >>> type(‘6.4’) <class ‘str’> >>> type(b’6.4′) <class ‘bytes’> >>> type([’6.4′]) <class ‘list’> print print Formatted Output PEP 378 — Format Specifier for Thousands Separator ### comma separated list of values # sep=" " -> separated by blanks (default behaviour) […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3331","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/3331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3331"}],"version-history":[{"count":13,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/3331\/revisions"}],"predecessor-version":[{"id":8397,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/3331\/revisions\/8397"}],"wp:attachment":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}