I’m currently working on Japanese version of windows XP.
Yesterday, I tried to use python’s (ver 2.5.1.1) regular expression service to
batch rename files in a directory, but the problem occurred: python failed to
match file names.
Then I made some small scripts, and found that python can’t handle string very
well (or maybe this is intended?).
The test environment:
1. An empty directory is made.
2. A file named “パイソン.txt” is created under the directory.
3. Python scripts are placed and run under the directory.
4. All python scripts are written by Notepad. Because python cannot recognize
Unicode text file, so I test 2 file encodings: ANSI and UTF-8.
################ Script ############################################
# -*- encoding: shift_jis -*-
# script1.py (saved as ansi text file)
import os, re
def rename():
pattern = 'パイソン\.txt' # ANSI
print 'pattern: ', pattern
myre = re.compile(pattern)
for f in os.listdir('.'):
m = myre.match(f)
if m != None: print f, ': match!'
else: print f, ': doesn\'t match!'
rename()
################# Output ###########################################
pattern: パイソン\.txt
パイソン.txt : doesn't match!
################ Script ############################################
# -*- encoding: shift_jis -*-
# script2.py (saved as ansi text file)
import os, re
def rename():
pattern = u'パイソン\.txt' # Unicode
print 'pattern: ', pattern
myre = re.compile(pattern)
for f in os.listdir('.'):
m = myre.match(f)
if m != None: print f, ': match!'
else: print f, ': doesn\'t match!'
rename()
################# Output ###########################################
pattern: パイソン\.txt
パイソン.txt : doesn't match!
################ Script ############################################
# script3.py (saved as UTF-8 text file)
import os, re
def rename():
pattern = 'パイソン\.txt' # ANSI
print 'pattern: ', pattern
myre = re.compile(pattern)
for f in os.listdir('.'):
m = myre.match(f)
if m != None: print f, ': match!'
else: print f, ': doesn\'t match!'
rename()
################# Output ###########################################
pattern: 繝代う繧ｽ繝ｳ\.txt
パイソン.txt : doesn't match!
(pattern is shown as unrecognizable characters)
################ Script ############################################
# script4.py (saved as UTF-8 text file)
import os, re
def rename():
pattern = u'パイソン\.txt' # Unicode
print 'pattern: ', pattern
myre = re.compile(pattern)
for f in os.listdir('.'):
m = myre.match(f)
if m != None: print f, ': match!'
else: print f, ': doesn\'t match!'
rename()
################# Output ###########################################
pattern: パイソン\.txt
パイソン.txt : doesn't match!
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