重命名串/ Python中

Question

重命名文件我有一堆文件象下面這樣：

_1 blank file_ 
_10 - blank file_ 
_11 - blank file_ 
_2 blank file_ 
_3 blank file_ 

我想打印出來的名稱與數字填補（2個字符）

我：

PATH = "/Users/seth/python/test" 
# 
# 
for (path, dirs, files) in os.walk(PATH): 

    for z in files: 

     filename = z.replace(" ","_").replace("-","").replace("__","_") 
     print filename 

所需的輸出：

_01_blan k_file_

_02_blank_file_

_03_blank_file_

_10_blank_file_

_11_blank_file_

Answer 1

您可以使用該rjust：

for (path, dirs, files) in os.walk(PATH): 
    for z in files: 
    filename = z.replace(" ","_").replace("-","").replace("__","_") 

    # explode and transform number 
    parts = filename.split('_', 2) 
    parts[1] = parts[1].rjust(2, '0') 

    # rejoin the transformed parts 
    print '_'.join(parts)