Python 3.6 统计Java代码或python代码中有效代码占比

 刚才突然想统计一下自己写的代码中有效代码数量，也好久没在这上面写博客了(播客搬家了)，然后就有了此文。

代码如下(有bug请指出)：

一、直接python demo.py运行

二、或者 import demo

  demo.run("你的源码地址")

#!/usr/bin/env python
#coding=utf-8
import os,re
#代码所在目录
FILE_PATH = "D:\\sublime text workplace\\java\\"
def _analyze_code(codefilesource):
    '''
    打开py文件，统计代码行数，包括空行和注释
    '''
    total_line = 0
    comment_line = 0
    blank_line = 0
    with open(codefilesource,'r+',encoding="UTF-8") as f:
        lines = f.readlines()
        total_line = len(lines)
        line_index = 0
        #遍历每一行
        while line_index < total_line:
            line = lines[line_index]
            #检查是否为注释
            if line.startswith("#") or re.match(r"^\s*//",line):
                comment_line += 1
            elif re.match(r"\s*'''",line) is not None:
                comment_line += 1
                while re.match(r".*'''$",line) is None:
                    line = lines[line_index]
                    comment_line += 1
                    line_index += 1
            elif re.match(r"\s*/\*+",line):
                comment_line +=1
                while re.match(r"\*/",line):
                    line = lines[line_index]
                    comment_line += 1
                    line_index += 1
            #检查是否为空行
            elif line == "\n" or re.match("^\s*$",line):
                blank_line += 1
            line_index +=1
        print("在%s中 ： "% codefilesource)
        print("代码行数 :",total_line)
        print("注释行数 :",comment_line,"占%0.2f%%"%(comment_line*100.0/(total_line if total_line!=0 else 1)))
        print("空行数： ",blank_line,"占%0.2f%%"%(blank_line*100.0/(total_line if total_line!=0 else 1)))
        return [total_line,comment_line,blank_line]
def run(FILE_PATH):
    #切换到所在目录
    os.chdir(FILE_PATH)
    total_lines = 0
    total_comment_lines = 0
    total_blank_lines = 0
    for i in os.listdir(os.getcwd()):
        if os.path.splitext(i)[1] == '.py' or os.path.splitext(i)[1] == '.java':
            line = _analyze_code(i)
            total_lines,total_comment_lines,total_blank_lines = total_lines + line[0], total_comment_lines + line[1], total_blank_lines + line[2]
    print("总代码行数 :",total_lines)
    print("总注释行数：",total_comment_lines, "占%0.2f%%" % (total_comment_lines*100.0/total_lines if total_lines!=0 else 100))
    print("总空行数：",total_blank_lines, "占%0.2f%%" % (total_blank_lines*100.0/total_lines if total_lines!=0 else 100))

if __name__ == '__main__':
    run(FILE_PATH)