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1.1 Îļþ²Ù×÷º¯Êý
1.1.1 open()º¯ÊýÌṩ´´½¨¡¢´ò¿ª¡¢ÐÞ¸ÄÎļþµÄ¹¦ÄÜ¡£
Example 1-1. Using the os Module to Rename and Remove Files
#Filename: os-example-1.py
import os
import string
def replace(file, search_for, replace_with):
    # replace strings in a text file
    back = os.path.splitext(file)[0] + ".bak"
    temp = os.path.splitext(file)[0] + ".tmp"
    try:
        # remove old temp file, if any
        os.remove(temp)
    except os.error:
        pass
    fi = open(file)
    fo = open(temp, "w")
    for s in fi.readlines():
        fo.write(string.replace(s, search_for, replace_with))
    fi.close()
    fo.close()
    try:
        # remove old backup file, if any
        os.remove(back)
    except os.error:
        pass
    # rename original to backup...
    os.rename(file, back)
    # ...and temporary to original
    os.rename(temp, file)
# try it out!
file = "samples/sample.txt"
replace(file, "hello", "tjena")
replace(file, "tjena", "hello")
1.1.2 rename()ºÍremove()º¯Êý,¶ÔÎļþ½øÐÐÖØÃüÃûºÍɾ³ý²Ù×÷.Çë²ÎÕÕÀý1-1
1.2 Ŀ¼²Ù×÷
1.2.1 listdir()º¯Êý,·µ»ØÖ¸¶¨Ä¿Â¼ÏÂËùÓÐÎļþÃû,²¢±£´æÓÚÒ»ÁбíÖÐ.µ«µ±Ç°Ä¿Â¼±ê¼Ç(.)ºÍ¸¸Ä¿Â¼±ê¼Ç(..)²»ÔÚÆäÖÐ.
Example 1-2. Using the os Module to List the Files in a Directory
File: os-example-2.py
import os
for file in os.listdir("samples"):
 


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