Tim wrote: > I ran into a problem with a script i was playing with to check code > indents and need some direction. It seems to depend on if tabsize is > set to 4 in editor and spaces and tabs indents are mixed on consecutive > lines. Works fine when editors tabsize was 8 regardless if indents are > mixed. > > Below are how the 3 test files are laid out, the sample code and output > I get. > Any help on how to detect this correctly would be appreciated. > > > # nano -T4 tabspacing_4.py > class Test: > """triple quote""" #indent is 1 tab > def __init__(self, msg): #indent is 4 spaces << > this gets reported as a dedent when there is no change in indent level > self.msg = msg #indent is 2 tabs > > #nano -T8 tabspacing_8A.py > class Test: > """triple quote""" #indent is 1 tab > def __init__(self, msg): #indent is 8 spaces << no > indent change reported > self.msg = msg #indent is 1 tab + 4 spaces > > #nano -T8 tabspacing_8B.py > class Test: > """triple quote""" #indent is 1 tab > def __init__(self, msg): #indent is 1 tab << > no indent change reported > self.msg = msg #indent is 1 tab + 4 spaces > > > > My script > > #!/usr/bin/env python > > import tokenize > from sys import argv > > indent_lvl = 0 > line_number = 0 > lines = file(argv[1]).readlines() > done = False > > def parse(): > > def feed(): > > global line_number, lines > > if line_number < len(lines): > txt = lines[line_number] > line_number += 1 > else: > txt = '' > > return txt > > def indents(type, token, start, end, line): > > global indent_lvl, done > > if type == tokenize.DEDENT: > indent_lvl -= 1 > elif type == tokenize.INDENT: > indent_lvl += 1 > elif type == tokenize.ENDMARKER: > done = True > return > else: > return > > print "token=%s, line_number=%i, indent_lvl=%i" % > (tokenize.tok_name[type], start[0], indent_lvl), line.strip() > > while not done: > tokenize.tokenize(feed, indents) > > parse() > > > $ ./sample.py tabspacing_4.py > token=INDENT, line_number=3, indent_lvl=1 """triple quote""" > #indent is 1 tab > token=DEDENT, line_number=4, indent_lvl=0 def __init__(self, msg): > #indent is 4 spaces <-- PROBLEM HERE > token=INDENT, line_number=5, indent_lvl=1 self.msg = msg > #indent is 2 tabs > token=DEDENT, line_number=8, indent_lvl=0 > > $ ./sample.py tabspacing_8A.py > token=INDENT, line_number=3, indent_lvl=1 """triple quote""" > #indent is 1 tab > token=INDENT, line_number=5, indent_lvl=2 self.msg = msg > #indent is 1 tab + 4 spaces > token=DEDENT, line_number=8, indent_lvl=1 > token=DEDENT, line_number=8, indent_lvl=0 > > $ ./sample.py tabspacing_8B.py > token=INDENT, line_number=3, indent_lvl=1 """triple quote""" > #indent is 1 tab > token=INDENT, line_number=5, indent_lvl=2 self.msg = msg > #indent is 1 tab + 4 spaces > token=DEDENT, line_number=8, indent_lvl=1 > token=DEDENT, line_number=8, indent_lvl=0
Well, the simple answer is "Don't mix tabs and spaces." But if that's unhelpful ;-) , check out the tabnanny script (now in the standard library) and also the expandtabs() method of strings. http://docs.python.org/lib/module-tabnanny.html Peace, ~Simon -- http://mail.python.org/mailman/listinfo/python-list
