Newbie to python writing a script to recurse a directory tree and delete
the first line of a file if it contains a given string. I get the same
error on a Mac running OS X 10.4.8 and FreeBSD 6.1.
Here's the script:
# start of program
# p.pl - fix broken SMTP headers in email files
#
# recurses from dir and searches all subdirs
# for each file, evaluates whether 1st line starts with "From "
# for each match, program deletes line
import fileinput
import os
import re
import string
import sys
from path import path
# recurse dirs
dir = path(/home/wsbs/Maildir)
for f in dir.walkfiles('*'):
#
# test:
# print f
#
# open file, search, change if necessary, write backup
for line in fileinput.input(f, inplace=1, backup='.bak'):
# check first line only
if fileinput.isfirstline():
if not re.search('^From ',line):
print line.rstrip('\n')
# just print all other lines
if not fileinput.isfirstline():
print line.rstrip('\n')
fileinput.close()
# end of program
The script produces this error:
Traceback (most recent call last):
File "./p", line 22, in ?
for line in fileinput.input(f, inplace=1, backup='.bak'):
File "/sw/lib/python2.4/fileinput.py", line 231, in next
line = self.readline()
File "/sw/lib/python2.4/fileinput.py", line 300, in readline
os.rename(self._filename, self._backupfilename)
OSError: [Errno 21] Is a directory
If I uncomment that test routine, and comment out the fileinput stuff,
the program DOES print the full pathname/filename for the variable f.
Many thanks for clues as to why fileinput.input doesn't like f.
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