Counting statements in Python source files

Question

Lines of code are a bad measurement for anything, for reasons not discussed here. But is there a neat way to count statements in a Python source code file?

So what do you want to exclude? Blank lines and comments? All comments (including docstrings)? — Gareth Latty, May 04 '12 at 18:38
Everything which is not meaningful for the application control flow (blank lines, comments, etc.) Also counting ; separated statements. — Mikko Ohtamaa, May 04 '12 at 18:39
Possible repeat: http://stackoverflow.com/questions/5764437/python-code-statistics — , May 04 '12 at 18:42
the number of statements/expressions is equally misleading as the lines of code I think... — moooeeeep, May 04 '12 at 19:57

score 3 · Accepted Answer · answered May 04 '12 at 22:34

3

pylint gives in its output report directly:

  pylint main.py 

  ...

  Report
  ======
  145 statements analysed.

answered May 04 '12 at 22:34

Mikko Ohtamaa

82,057
50
264
435

1

Is there any way to obtain only statement count from Pylint ? `Pylint --reports=y main.py` results all messages along with statement count. – YatShan Jan 01 '20 at 02:42

score 1 · Answer 2 · answered May 04 '12 at 22:10

1

Use the ast module that parses and constructs the syntax tree from Python code. You will be able to apply the customized counting algorithm you would like based on that tree and the nodes.

answered May 04 '12 at 22:10

Zeugma

31,231
9
69
81

score 0 · Answer 3 · answered May 04 '12 at 19:52

0

To count physical lines of code (as opposed to locical lines of code) I have found SLOCCount to give reasonable numbers.

answered May 04 '12 at 19:52

Ulf Rompe

919
6
8

Yes, but this number is useless and SO it not right place to have conversation why it is useless – Mikko Ohtamaa May 04 '12 at 20:12
@MikkoOhtamaa On the contrary, if you're going to complain about solutions, you had better give some reasons. – Marcin May 04 '12 at 22:18

andresperezcba · Answer 4 · 2019-09-14T22:32:34.853

Although this is an old post. Here is a snippet of code that counts the statements in a python source file in the same way as PyLint does.

from astroid import MANAGER
# Tested with astroid 2.3.0.dev0

class ASTWalker:
    """
    Class to walk over the Astroid nodes
    """
    def __init__(self):
        self.nbstatements = 0

    def walk(self, astroid_node):
        """
        Recurse in the astroid node children and count the statements.
        """
        if astroid_node.is_statement:
            self.nbstatements += 1

        # recurse on children
        for child in astroid_node.get_children():
            self.walk(child)

walker = ASTWalker()
ast_node = MANAGER.ast_from_file("/my/file/name", source=True)
walker.walk(ast_node)

print(walker.nbstatements)

Counting statements in Python source files

4 Answers4