Python 统计代码行

正在学习 Python, 做了个统计代码行的功能，

参考了网上很多前辈的帖子，添加了感觉还是比较实用的功能，

只是windows下测试了，而且代码文件编码形式是 utf-8的。

如果使用其它编码形式的话，估计修改下代码就行了。

功能特点：

是否统计空行

统计注释

设置忽略文件平

设置统计文件类型

根据不同文件类型，设置注释标签

以下，是代码：

 # Created by Aaron <xinlingever@outlook.com> in 2014
 # This code is for Python 3.4

 import os, sys
 import traceback

 def strToBool(v):
     return v.lower() in ("yes", "true", "t", "")

 exts = ['.js', '.html', '.css', '.h', 'cpp']
 commentTags = ['//,/* */','<!-- -->','/* */', '//, /* */', '//, /* */','//, /* */']
 commentTypeIndex = ['.js', '.html', '.css', '.cs', '.cpp', '.h']
 ignor_folders = ['debug', 'release', 'ipch', 'output', '.svn', '.git', 'durango', 'bld', 'layout']
 max_line_limit = 2000

 count_empty_line = False
 if len(sys.argv) > 1:
     here = sys.argv[1]
 else:
     here = sys.argv[0]

 if(len(sys.argv) > 2):
     exts = sys.argv[2].split()
 if(len(sys.argv) > 3):
     count_empty_line = strToBool(sys.argv[3])

 def read_line_count(fname):
     count = 0
     comment_count = 0

     is_in_multi_comment = False
     multi_line_comment_tag_tailer = ''
     for line in open(fname, encoding='utf-8').readlines():
         if count_empty_line and len(line.strip()) == 0:
             count += 1
         else:
             if len(line.strip()) > 0:
                 count += 1

                 # count  comment
                 if(is_in_multi_comment):
                     comment_count += 1

                     if(line.find(multi_line_comment_tag_tailer) >= 0):
                         is_in_multi_comment = False
                 else:
                     ext = (fname[fname.rindex('.'):]).lower()
                     if ext not in commentTypeIndex:
                         continue

                     for commentTag in commentTags[commentTypeIndex.index(ext)].split(','):
                         if(len(commentTag.split()) == 1):
                             # single line comment
                             if line.strip().startswith(commentTag):
                                 comment_count += 1
                             else:
                                 if(line.find(commentTag) >= 0):
                                     comment_count += 1

                         else:
                             # multi line comment
                             multi_line_comment_tags = commentTag.split()
                             multi_line_comment_tag_header = multi_line_comment_tags[0]
                             multi_line_comment_tag_tailer = multi_line_comment_tags[1]

                             if line.find(multi_line_comment_tag_header) >= 0:
                                 comment_count += 1
                                 is_in_multi_comment = True
                             if line.find(multi_line_comment_tag_tailer) >= 0:
                                 is_in_multi_comment = False

     return count,comment_count
 if __name__ == '__main__':
     line_count = 0
     file_count = 0
     comment_line_count = 0

     subFolderCount = 0;
     for base, dirs, files in os.walk(here):
         for file in files:
             #print(file)
             # Check the sub directorys
             if file.find('.') < 0:
                 #print(file)
                 continue

             ext = (file[file.rindex('.'):]).lower()
             try:
                 if ext in exts:
                     path = os.path.join(base,file)
                     relative_path = path[len(here):].replace(file,'').lower()
                     is_ignore = False
                     for ignorFolder in ignor_folders:
                         if relative_path.find(ignorFolder) >= 0:
                             is_ignore = True
                             break;
                     if is_ignore:
                         continue

                     c,c2 = read_line_count(path)
                     if max_line_limit > 0:
                         if c > max_line_limit:
                             continue

                     file_count += 1

                     print ("\t.%s : %d  %d" % (path[len(here):], c, c2))
                     line_count += c
                     comment_line_count += c2
                 #else:
                     #print(file, "is not in list")
             except Exception as N:
                 print(traceback.format_exc())
                 pass
     print ('File count : %d' % file_count)
     print ('Line count : %d' % line_count)
     print ('Comment line count : %d' % comment_line_count)
     print ('Comment rage is {:.2%}'.format ( comment_line_count / line_count))