统计指定后缀文件的代码行数

通过递归的方式获取文件夹内指定后缀类型所有文件的行数，用于统计代码行数

import os

def getFileNames(path, list_name, postfx):
    for file in os.listdir(path):
        file_path = os.path.join(path, file)
        if os.path.isdir(file_path):
            getFileNames(file_path, list_name, postfx)
        else:
            suffix = os.path.splitext(file_path)
            if len(suffix)==2: 
                for item in postfx:
                    if item==suffix[1]:
                        list_name.append(file_path)


if __name__=="__main__":
    path=R'D:\VisualStudio2017\src'
    list_name=[]
    postfix = {'.h', '.cpp'}
    getFileNames(path, list_name, postfix)
    lineNum=0
    for file in list_name:
        print(file)
        with open(file, 'r', encoding='gb2312') as f:
            for line in f:
                lineNum = lineNum + 1
        print(lineNum)
    print(len(list_name))