Python

These two days for a project written in Bottle+mongodb with the login function, but how can not get to save the cookie, the document to give us the code snippet to manipulate cookies: @route ('/login ') def login (): username = Request. Forms.

The code is as follows: Import OSImport SysImport MySQLdbDEF getStatus (conn):query = "SHOW SLAVE STATUS"# Print Querycursor = Conn.cursor ()Cursor.execute (query)result = Cursor.fetchall ()return result[0]DEF resolve (conn):cursor = Conn.cursor ()

Be familiar with the Python language and learn how Python is encoded.Be familiar with the Python library and know how to find the corresponding module when you encounter the development task.Know how to find and get a third-party Python library to

After installing CentOS5.9 (Final), execute #python and #python-v, see version number is 2.4.3, very old, and before written is run on python3.x above, 3.X and 2.X have a lot of different, interested friends can refer to this

There are defined fonts in the large frame of the website, including font size and color, which may be copied from other websites when the user publishes the article, and the copying process retains the font description information. When the article

1) doctest Using Doctest is a similar approach to command-line attempts, and the usage is simple, as follows The code is as follows: def f (n):""">>> F (1)1>>> F (2)2"""Print (n)if __name__ = = ' __main__ ':Import DoctestDoctest.testmod () It

1, HashlibImport Hashlib #创建一个哈希对象 md = HASHLIB.MD5 () #md = HASHLIB.SHA1 () #md = hashlib.sha224 () #md = Hashlib.sha25 () #md = hashlib.sha384 () #md = hashlib.sha512 () 1.1 Hashlib.update (ARG) 1.2 Hashlib.digest () #返回数字形式的哈希 1.3

IDLE 3.0 >>> dic = {"AA": 1, "BB": 2, "AB": 3} >>> DIC {' AA ': 1, ' AB ': 3, ' BB ': 2} >>> for K in Sorted (Dic.keys ()): Print (k) Aa Ab ----------------------------------------------- A Dictionary object is actually a key-value pair Here

The copy of ********.bmp or copy of copy of ********.bmp such files are uniformly named ********0.bmp or ********00.bmp format, and the number of the following 0 represents ********. The number of BMP occurrences +1. Wrote a small script below: The

The sample program is as follows: >>> a = [-1, 3, ' AA ', 85] # define a list>>> A[-1, 3, ' AA ', 85]>>> del a[0] # delete No. 0 element>>> A[3, ' AA ', 85]>>> del A[2:4] # Removes the element starting from the 2nd element to the 4th. Including

The code is as follows: def find_file_by_pattern (pattern= '. * ', base= ".", Circle=true):"' Find all the ' ' under a given folderRe_file = Re.compile (pattern)If base = = ".":Base = OS.GETCWD ()Final_file_list = []Print baseCur_list = Os.listdir

Previous article Python: Using the Threading module for multithreaded programming four [using lock mutex] we have started to relate to how to use mutexes to protect our public resources, now consider the following situation – If you have more than

Introducing the next Psyco module today, the Psyco module will make your Python program run as fast as the C language. It is said that Python language is easy to learn, but performance is much worse than some compiled languages (such as C), where

The IP regular is: R ' (([12][0-9][0-9]|[ 1-9][0-9]| [1-9]) \.) {3,3} ([12][0-9][0-9]| [1-9] [0-9]| [1-9]) ' Here is an example #-*-Coding:utf-8-*- Import re def IP (): ' Verify the regular IP ' def match_group (P): s = "' 211.210.209.108 Gan ffad1.2

For example: Import MyModule MyObject = Mymodule.myclass () Or From MyModule import MyClass MyObject = MyClass () If you want to create a class instance dynamically in your program, you have to take two steps, for example: m = __import__ ('

More recently, analysis with programming joined Planet Python. As the first special blog of the site, I'll share how to start data analysis with Python. The specific contents are as follows: Data importImport a local or web-side CSV file;Data

The usual module is OS, Os.path and Shutil, so introduce them first. python traversing folders and files This is perhaps the most commonly used feature, as follows: The code is as follows: Import OSImport Os.pathRootDir =

For example, convert a string to a character array: thelist = List (thestring) At the same time, we can easily traverse through the For statement: For C in TheString: Do_something_with (c) To use such a statement: result = [Do_something_with

1.open Always remember to call the close () method of the file object after opening the file with open. For example, you can use the Try/finally statement to ensure that the file is closed at last. File_object = open (' Thefile.txt ') Try:

Sometimes I ask myself, how do I not know in Python 3 in a simpler way to do "such" things, when I seek answers, over time, I certainly found more concise, effective and less bug code. Overall (not just this article), the total number of "those"