统计python代码量

        今天闲着没事，花了一点时间写了一个程序来统计一个目录或多个目录下python文件的代码总行数、注释总行数、空行总行数、真正代码总行数。具体代码如下:

python 代码

class CalculateCode():
    def __init__(self):
        self.total_count = 0
        self.code_count = 0
        self.comment_count = 0
        self.blank_count = 0

    def calculate_file(self, filename):
        file = open(filename, 'r')
        lines = file.readlines()
        line_count = 0
        line_len = len(lines)
        self.total_count += line_len
        while line_count < line_len:
            line_without_space = lines[line_count].strip()
            if not line_without_space:
                self.blank_count += 1
                line_count += 1
            elif line_without_space.startswith('#'):
                self.comment_count += 1
                line_count += 1
            elif line_without_space.startswith("'''"):
                self.comment_count += 1
                line_count += 1
                if not line_without_space.endswith("'''"):
                    while line_count < line_len:
                        comment_line = lines[line_count].strip()
                        self.comment_count += 1
                        line_count += 1
                        if comment_line.endswith("'''"):
                            break
            else:
                self.code_count += 1
                line_count += 1

    def calculate_directory(self, directory):
        import os
        if os.path.isfile(directory):
            if os.path.splitext(directory)[1] == '.py':
                self.calculate_file(directory)
            else:
                raise Exception('The file must be a python file')
        elif os.path.isdir(directory):
            for path in os.listdir(directory):
                if os.path.isdir(directory+'\\'+path):
                    self.calculate_directory(directory+'\\'+path)
                elif os.path.splitext(path)[1] == '.py':
                    self.calculate_file(directory+'\\'+path)
                else:
                    pass
        else:
            raise Exception('No this directory or file!')

    def calculate_directories(self, directories):
        for directory in directories:
            self.calculate_directory(directory)

    def show_result(self):
        print 'total_count: %d\ncode_count: %d\ncomment_count: %d\nblank_count: %d\n' \
        %(self.total_count,self.code_count,self.comment_count,self.blank_count)

if __name__ == '__main__':
    import sys
    if len(sys.argv) > 1:
        path_list = sys.argv[1:]
        calculate_code = CalculateCode()
        calculate_code.calculate_directories(path_list)
        calculate_code.show_result()
    else:
        print 'Please use command like this:\n"python calculatecode.py directory1 directory2 ..."'