1 #编程统计制定路径的文件格式
 2 import os
 3 format_file =dict()
 4 count=0
 5 for each in os.listdir(‘E:\\‘):
 6     count+=1
 7     (former, latter) = os.path.splitext(each)
 8     if latter not in format_file:
 9         format_file[latter]=1
10     else:
11         format_file[latter]+= 1    
12 print(‘该文件夹下共有%d个文件‘% count)
13 for eachkey in format_file.keys():  
14     print(‘该文件夹共有类型为【%s】的文件%d个‘ % (eachkey, format_file[eachkey]))

 1 import os
 2 
 3 all_files = os.listdir(‘E:\\‘) # 使用os.curdir表示当前目录更标准
 4 type_dict = dict()
 5 
 6 for each_file in all_files:
 7     if os.path.isdir(each_file):
 8         type_dict.setdefault(‘文件夹‘, 0)
 9         type_dict[‘文件夹‘] += 1
10     else:
11         ext = os.path.splitext(each_file)[1]
12         type_dict.setdefault(ext, 0)
13         type_dict[ext] += 1
14 
15 for each_type in type_dict.keys():
16     print(‘该文件夹下共有类型为【%s】的文件 %d 个‘ % (each_type, type_dict[each_type]))