Python

String processingmsg = ‘my name is sylar‘Capitalize method to capitalize the first letter of a stringprint ‘capitalize方法:‘, msg.capitalize()The Swapcase method is used to convert the uppercase and lowercase letters of a string. Upperprint

Requirement 1:ABCD * 9 = DCBABy calculating the method, we calculate a =?  B =?  C =? D =?A:1-9B:0-9C:0-9D:1-9A! = B! = C! = DCode:Class countnumber (object):     def __init__ (self):         print ("abcd * 9 = dcba; a != b != c !=  d ")

Import OSImport Fnmatchdef is_file_match (filename, patterns):For pattern in patterns:If Fnmatch.fnmatch (filename, pattern):Return TrueReturn Falsedef find_specific_files (Root, patterns=[' * '], exclude_dir=[]):For Root, Dirnames, filenames in

1 #!/usr/bin/env python2 #-*-coding:utf-8-*-3 #Auther:summer4 5 #string Manipulation6Name ="Summer Du"7 Print(Name.capitalize ())#capitalize the initial letter8 Print(Name.casefold ())#uppercase letters All lowercase9 Print(Name.center

Return multiple valuesCan a function return multiple values? The answer is yes.For example, in the game often need to move from one point to another point, give the coordinates, displacements and angles, you can calculate a new new

Python dictionary Some in-depth experiencePython dictionary 3 methods, items (), values (), keys (), returned object not list,3 methods The returned object can be iterated, and the dictionary can be deducedsquares={number:number**2 for number in

1. Install Python,ipython,pycharm Pro version software on Linux computers;2. Install the Python3 version on the Windows computer and configure the environment variables to ensure that the script runs in a DOS environment;3. How many different ways

List and list operations:List is one of the most commonly used data types, lists are also called arrays, list definitions, use [] can be, a list of the list, a set of a list, called a two-dimensional array; A list inside a set, the list of a list,

Environment Python 2.7python proxy type selection python proxy settings are usually as follows:= { "http""http://10.10.1.10:3128", "https""http://10.10.1.10:1080",}In HTTP and HTTPS two types, the HTTPS type of IP must correspond to such as:

#coding: Utf8from smtplib import smtp_sslfrom email.header import headerfrom email.mime.text import Mimetextmail_ info = {"from": "[email protected]", "to": "[email protected]", "hostname": "smtp.qq.com", "Usernam E ":" [email protected] ","

118 Pascal ' s TriangleGiven numrows, generate the first numrows of Pascal ' s triangle.For example, given numrows = 5,Return[ 1], [ 1,2,1], [ 1,3,3,1], [ 1,4,6,4,1]Class solution (Object): def generate (self, numrows): "" " :

The first thing to do is to open a file, open the file there are two ways of opening (...) and the file (...), in essence the former will call the latter for file operations, but generally use open ()The action file includes the read, write, and

File operation 1, file path: D:\xxxx.txt absolute path: From the root directory to the last relative path: File 2 in the current directory, encoding: utf-83, how to: Read Only, write, append, read and write, read ... (1) Read-only--rF =open (' path '

How to add your own modules to Python's default search path:No need to import SYS and sys.path.append ("...") every time.Find the installation directory for PythonD:\python\Lib\site-packages, you must use the. PTH suffix to write the directory name

Open (File, mode= ' R ', Buffering=-1, Encoding=none, Errors=none, Newline=none, Closefd=true)Opening a file and returning a stream also allows you to read and write Stringio (text) or Bytesio (binary) as a fileFileName-File name or URL.Mode-Open

# the functions and methods obtained by using reflection can be called directly with parentheses as usual, and the instance can be constructed directly after obtaining the class.# However, the obtained field cannot be assigned directly because it is

Python3 in bytes and stringsOnly one data type in Python3 can hold text information, which is str (string), which is an immutable sequence, and the Unicode code bit is saved. In Python3, the bytes object is used to process the byte string.Unlike str,

1. The bonus awarded by the Enterprise is based on the profit percentage. Profit (I) less than or equal to $100,000, bonus can be raised by 10%; high profitAt $100,000, below $200,000, the portion under $100,000 is 10% commission, higher than $100,00

Tag: Gen log file one requires Std to get Python astA function that contains yield, which is executed to obtain a code flow that requires next to push execution.Code flow is like toothpaste, next is like squeezing toothpaste.def Odd (): Print

# string method does not change the value of the original stringName = ' besttest 'Print (Name.strip ()) # Default minus spaces and line breaks on both sidesPrint (name)Print (' 123 456 '. Strip (' 456 '))New_name = Name.lstrip () # Remove the