Statistics the code in the Python file, comments, the number of lines corresponding to the blank

Actually the code and the blank line is very good statistics, the difficulty is the comment line

Comments in Python are divided into single-line comments that begin with #

Or a document comment that begins with "'" or "" "to End With" ", such as:

‘‘‘

Hello World

"' and

‘‘‘

Hello World "

The idea is to use is_comment to record whether there are multiple lines of comments, if not, then determine whether the current line begins with ' ', is set is_comment to True, otherwise the blank line, the current line comment, and the line of code judgment, if Is_comment is already true, When a multiline comment has already started, it is determined whether the current line ends with a "', or is_comment is set to false, and the number of lines of the comment is increased. Indicates that a multiline comment has ended, and vice versa, when the multiline comment is not over

Path ='test.py'with open (path,'R', encoding='Utf-8') as F:code_lines= 0#number of lines of codeComment_lines = 0#number of comment linesBlank_lines = 0#blank line count ' \ n ', after strip ()Is_comment =False Start_comment_index= 0#record the position of an annotation beginning with "or" "     forIndex,lineinchEnumerate (f,start=1): Line= Line.strip ()#remove the opening and closing whitespace characters

　 　　　　 #determine if a multiline comment has started 　         if  notis_comment:ifLine.startswith ("" "")orLine.startswith ('"""'):is_comment=True Start_comment_index=Index#单行Notes            elifLine.startswith ('#'): Comment_lines+ = 1#Blank Line            elifline = ="': Blank_lines+ = 1#Line of code            Else: Code_lines+ = 1#多行注释已经开始        Else:            ifLine.endswith ("" "")orLine.endswith ('"""'):is_comment=False Comment_lines+ = Index-start_comment_index + 1Else:                PassPrint("Note:%d"%comment_lines)Print("blank line:%d"%blank_lines)Print("Code:%d"% code_lines)

Statistics the code in the Python file, comments, the number of lines corresponding to the blank