We're back after a server migration that caused effbot.org to fall over a bit harder than expected. Expect some glitches.

The tokenize module

This module splits a Python source file into individual tokens. It can be used for syntax highlighting, or for various kinds of code analysis tools.

In the following example, we simply print the tokens:

Example: Using the tokenize module
# File: tokenize-example-1.py

import tokenize

file = open("tokenize-example-1.py")

def handle_token(type, token, (srow, scol), (erow, ecol), line):
    print "%d,%d-%d,%d:\t%s\t%s" % \
        (srow, scol, erow, ecol, tokenize.tok_name[type], repr(token))


1,0-1,6:     NAME    'import'
1,7-1,15:    NAME    'tokenize'
1,15-1,16:   NEWLINE '\012'
2,0-2,1:     NL      '\012'
3,0-3,4:     NAME    'file'
3,5-3,6:     OP      '='
3,7-3,11:    NAME    'open'
3,11-3,12:   OP      '('
3,12-3,35:   STRING  '"tokenize-example-1.py"'
3,35-3,36:   OP      ')'
3,36-3,37:   NEWLINE '\012'

Note that the tokenize function takes two callable objects; the first argument is called repeatedly to fetch new code lines, and the second argument is called for each token.