python get value from dictionary

Get a Chinese explanation of a word from Youdao Dictionary Web page. Import reimport urllibword=raw_input (' Input a word\n ') url= ' http://dict.youdao.com/search?q=%s '%word content= Urllib.urlopen (URL) pattern=re.compile ("", Re. Dotall) Result=pattern.search (Content.read ()). Group () Pattern2=re.compile ('.*?') for I in Pattern2.findall (result): print I.strip (''). Strip (''). Decode (' Utf-8 ')

The dictionary has a very good method, is get, can prevent Keyerror exception, can also set a default value for the nonexistent keyFor example:V=d.get (' k ', ' default ')The list does not have a similar method, and if the index of the access exceeds the length of the list, it will jump out of the exceptionIf you want to implement the function of a

A detailed introduction to the dictionary in python and a detailed introduction to the python dictionary 1. What is a dictionary? A dictionary is the only ing type in Python. In a ing o

Time SD = Shell (' Sleep 2 ') Sd.run_background () time.sleep (1) Sd.kill () sd.wait () # NOTE, still need to wait print sd.ret_code print s D.ret_info # 5. Test multiple command and uncompleted command output SE = Shell (' pwd;sleep 1;pwd;pwd ') se.run_background () time.s Leep (1) Se.kill () se.wait () # NOTE, still need to wait print se.ret_code print Se.ret_info # 6. Test wrong command SF = Shell (' aaaaa ') sf.run () Print sf.ret_code print sf.ret_info print Sf.err_info[

key-value pairs in the dictionary d. If x does not exist, a KeyError occurs. >>> d = {'z': 5, 'x': 1.5, 'y': 3} >>> del d['x'] >>> d {'z': 5, 'y': 3} >>> del d['x'] Traceback (most recent call last): File " D. clear () clear the dictionary dD. copy (): perform a light copy on the dictionary d, and return a new

The Configparser module was encapsulated last night and is the value obtained from KeyName. Python encapsulation configparser module get Conf.ini valueI originally wanted to get value by section and KeyName in the Config.ini file, and the first two days did not debug. Today

': 'platypus', 'A': 1} 3. del deletes an element with the specified key.>>> Del dict ['one']>>> Dict{'Two': '2', 'three ': '3 ',} 4. clear () delete all elements>>> Dict. clear ()>>> Dict {} 5. in determines whether a key exists (not a value)>>> 'One' in dictTrue>>> '1' in dictFalse6. Use [key] to obtain elements>>> Dict ['one']'1'PS: You can use the dictionary function

consisting of (Key, value) tuples. 4. dict. clear (): delete all elements in the dictionary. 5. dict. copy () returns a copy of the Dictionary (Shortest copy ). 6. dict. update (dict2), and add the key-value pairs of the dictionary dict2 to dict. 4.5.1 descriptions of the

Dictionary and set in Python, Python dictionary set I. Dictionary (dict) 1. Overview The dictionary is the only ing type in Python. You can only use immutable objects (such as strings)

callback address author @monsion The value of the code is in the Address bar. Next you start getting the data. (2014. 05.21 Note: Bo Master play play will fall to the automatic access code pit, data acquisition slowly, later update ... 2. Automatically get code value Bo master himself slowly pondering, the middle get

You recently need to use Python to get the MD5 value of a string. Today put the code to share with you. #!/usr/bin/env python #-*-coding:cp936-*- import hashlib def get_md5_value (SRC): myMd5 = HASHLIB.MD5 () mymd5.update (src) mymd5_digest = Mymd5.hexdigest ()

/********************************************************************** Author:samson* date:09/19/2014* Test Platform:* Linux Ubuntu 3.2.0-58-generic-pae* GNU Bash, version 4.2.39* *******************************************************************/When you divide two integers in Python, by default it is only possible to get the value of an integer, and when you

When traversing a sequence in python, we usually take the following approach: For item in sequence: process (item) If you want to take the location of an item, you can write this: For index in range (len (sequence)): process (Sequence[index]) Another better way is to use the enumerate function built in Python: Enumerate (sequence,start=0) In the above functi