python实现代码统计程序

# encoding="utf-8"

"""
统计代码行数
"""

import sys
import os

def count_file_line(path):
 """统计文件的有效行数"""
 countLine = 0
 # 设置一个标志位，当遇到以"""或者'''开头或者结尾的时候，置为False
 flag = True

 # 使用utf-8格式的编码方式读取文件，如果读取失败，将使用gbk编码方式读取文件
 try:
 fp = open(path, "r", encoding="utf-8")
 encoding_type = "utf-8"
 fp.close()
 except:
 encoding_type = "gbk"

 with open(path, "r", encoding=encoding_type) as fp:
 for line in fp:
  # 空行不统计
  if line.strip():
  line = line.strip()
  # 注意下面的这两个elif必须要前面，这样子当('"""')结束之后及时将flag置为True
  if line.endswith('"""') and flag == False:
   flag = True
   continue
  if line.endswith("'''") and flag == False:
   flag = True
   continue
  if flag == False:
   continue
  if line.startswith("#!") or line.startswith("#-*-") or line.startswith("# encoding"):
   countLine += 1
  # 如果以“#”号开头的，不统计
  elif line.startswith("#"):
   continue
  # 如果同时以("'''")或者('"""')开头或者结尾（比如："""aaa"""），那么不统计
  elif line.startswith('"""') and line.endswith('"""') and line != '"""':
   continue
  elif line.startswith("'''") and line.endswith("'''") and line != "'''":
   continue
  # 如果以("'''")或者('"""')开头或者结尾（比如：aaa"""或者"""bbb），那么不统计
  # 注意下面的这两个elif必须要放后面
  elif line.startswith('"""') and flag == True:
   flag = False
   continue
  elif line.startswith("'''") and flag == True:
   flag = False
   continue
  else:
   countLine += 1
 return countLine

def count_codes(path,file_types=[]):
 """统计所有文件代码行"""
 # 判断path是目录还是文件，如果是目录的话，遍历目录下所有的文件
 if not os.path.exists(path):
 print("您输入的路径不存在！")
 return 0
 countTotalLine = 0
 file_paths = {}
 if os.path.isdir(path):
 for root,dirs,files in os.walk(path):
  for name in files:
  if not file_types:
   file_types = ["txt","py"]
   # print(file_types)
  if os.path.splitext(name)[1][1:] in file_types:
   file_path = os.path.normpath(os.path.join(root,name))
   # print(file_path)
   file_lines = count_file_line(file_path)
   countTotalLine += file_lines
   file_paths[file_path] = file_lines
 else:
 if not file_types:
  file_types = ["txt","py"]
 if os.path.splitext(path)[1][1:] in file_types:
  countTotalLine = count_file_line(path)
  file_paths[path] = count_file_line(path)

 return countTotalLine,file_paths


if __name__ == "__main__":
 # 打印出命令行输入的参数
 # print(sys.argv)
 if len(sys.argv) < 2:
 print("请输入路径！")
 sys.exit()
 path = sys.argv[1]
 # print(path)
 file_types = sys.argv[2:]
 # print(file_types)
 print(count_codes(path,file_types))