python 修改檔案內容函數

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因為python內建庫中沒有修改檔案內容的方法，自己寫了兩個修改檔案內容的函數

import osdef change_file(address,line,content):    #修改檔案指定行    f=open(address,"r",encoding="utf-8")    f2=open("temporary_file.txt","w",encoding="utf-8")    i=0    for v in f:        i+=1        if i==line:            f2.write(content)        else:            f2.write(v)    f.close()    f2.close()    f = open(address, "w" ,encoding="utf-8")    f2=open("temporary_file.txt", "r",encoding="utf-8")    for v in f2:        f.write(v)    f.close()    f2.close()change_file("yesterday.txt",1,"ols li\n")def file_replace(address,find_str,replace_str,replacenum=1):    #替換檔案指定詞,預設替換一次，    with open(address,"r",encoding="utf-8") as f,          open("temporary_file.txt", "w", encoding="utf-8") as f2:         if replacenum <=0:              return 0         else:              for v in f:                   if replacenum == 0:                        f2.write(v)                   else:                        if replacenum <= v.count(find_str):                             f2.write(v.replace(find_str, replace_str, replacenum))                             replacenum = 0                        else:                             f2.write(v.replace(find_str, replace_str))                        replacenum = replacenum - v.count(find_str)    f = open(address, "w" ,encoding="utf-8")    f2=open("temporary_file.txt", "r",encoding="utf-8")    for v in f2:        f.write(v)    f.close()    f2.close()file_replace("yesterday.txt","昨日","今天",2)

 

python 修改檔案內容函數