Python實踐之路4——實現進度條和檔案內容參數替換

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1、檔案進度條

代碼需求： 

實現可視化，不斷增加#####的功能。

代碼實現：

1 #！/user/bin/env ptyhon2 # -*- coding:utf-8 -*-3 # Author: VisonWong4 5 import sys,time6 for i in range(20):7     sys.stdout.write("#")8     sys.stdout.flush()9     time.sleep(0.2)

輸出結果：

1 E:\Python\PythonLearing\venv\Scripts\python.exe E:/Python/PythonLearing/進度條.py2 ####################

會有不斷增加#的動畫效果。

2、檔案內容參數替換

 代碼需求: 

通過運行相應方法，輸入替換內容和被替換內容，實現檔案內容的替換

 1 #！/user/bin/env ptyhon 2 # -*- coding:utf-8 -*- 3 # Author: VisonWong 4  5 from sys import argv 6  7 script,find_str,replace_str = argv 8  9 f = open(‘yesterday.txt‘,‘r‘,encoding=‘utf-8‘)10 f1 = open(‘yesterday_bak.txt‘,‘w‘,encoding=‘utf-8‘)11 12 13 for line in f:14     if find_str in line:15         line = line.replace(find_str,replace_str)16     f1.write(line)17 18 f.close()19 f1.close()

 

 輸出結果：

運行時，在命令列輸入：

python changefile.py young old

原檔案內容：

 1 Oh, yesterday when I was young 2 噢 昨日當我年少輕狂 3 So many, many songs were waiting to be sung 4 有那麼那麼多甜美的曲兒等我歌唱 5 So many wild pleasures lay in store for me 6 有那麼多肆意的快樂等我享受 7 And so much pain my eyes refused to see 8 還有那麼多痛苦 我的雙眼卻視而不見 9 There are so many songs in me that won‘t be sung10 我有太多歌曲永遠不會被唱起11 I feel the bitter taste of tears upon my tongue12 我嘗到了舌尖淚水的苦澀滋味13 The time has come for me to pay for yesterday14 終於到了付出代價的時間 為了昨日15 When I was young16 當我年少輕狂

 

修改後檔案內容：

 1 Oh, yesterday when I was old 2 噢 昨日當我年少輕狂 3 So many, many songs were waiting to be sung 4 有那麼那麼多甜美的曲兒等我歌唱 5 So many wild pleasures lay in store for me 6 有那麼多肆意的快樂等我享受 7 And so much pain my eyes refused to see 8 還有那麼多痛苦 我的雙眼卻視而不見 9 There are so many songs in me that won‘t be sung10 我有太多歌曲永遠不會被唱起11 I feel the bitter taste of tears upon my tongue12 我嘗到了舌尖淚水的苦澀滋味13 The time has come for me to pay for yesterday14 終於到了付出代價的時間 為了昨日15 When I was old16 當我年少輕狂

 

 

Python實踐之路4——實現進度條和檔案內容參數替換