Python: Whetting Your Appetite If you do much work on computers, eventually you find that there’s some task you’d like to automate. For example, you may wish to perform a search-and-replace over a large number of text files, or rename and rearrange
inspect 模組 昨天在infoq上看到豆瓣架構師演講有提到這個模組 今天找來文檔看看 Doc:這樣寫到 The inspect module provides several useful functions to help get information about live objects such as modules, classes, methods, functions, tracebacks, frame objects, and code objects.
假設一個表有6個欄位c1,c2,c3,c4,c5,c6,有如下的sql語句:select c1,count(distinct(c6)) from tbl where c3>1 group by c3;python中asq模組可以實作類別似的查詢,以下用一個樣本說明。 #!/usr/bin/env python2.7#-*- encoding: utf-8 -*-import osfrom datetime import *import timefrom asq.initiators
將一些知識點記錄一下,有事沒事看一眼。 檔案讀取: open import os os.getcwd() #取得當前的執行路徑 os.chdir('C:/Users/ourgame/Desktop/headFirstPython') #進入某個路徑 data = open('sketch.txt') #開啟檔案 print(data.readline(),end='') #讀取一行,檔案指標會向下移動
有時候想看一下國外的教學視頻,必須得翻牆,這個倒是小問題(如不會的請Google),而且最近youtube上面的視頻帶上了字幕,如所示,於是想辦法下載下來!前提:假設已經翻牆成功步驟一:下載碩鼠Youtube專用下載器,下載Google Python Class 的全部課程步驟二:下載完成之後,開啟視頻,發現並沒有網上的字幕,蛋疼啊~,這樣我們這些菜鳥情何以堪,卑鄙的google啊!謹記毛爺爺的教誨,自己動手豐衣足食,找到了一個方法1.參照該網址http://www.guao.hk/posts/
一行代碼實現5!+4!+3!+2!+1!想要一行代碼實現5!+4!+3!+2!+1!?用Java、或者是C,我想應該比較難吧?不過在Python裡面卻非常的簡單。我們先看看用傳統的方法怎麼實現: def do_sum_default(num): """預設計算 n! + (n-1)! + 2! + 1""" num_list = map(lambda n: n + 1, range(num)) res = 0 for n in
Assignment statements in Python do not copy objects, they create bindings between a target and an object. For collections that are mutable or contain mutable items, a copy is sometimes needed so one can change one copy without changing the other.
httplib注意事項 1.使用httplib進行post請求時遇到錯誤:Exception happened during processing of request from ('192.168.8.23', 58164)Traceback (most recent call last): File "C:\Python27\lib\SocketServer.py", line 284, in _handle_request_noblock self.process_request(