Jan-28-2017, 05:25 PM
So below is the program that I am using to change files with European (DD-MM-YYYY) style date to American (MM-DD-YYYY) Style Date:
However, the files whose days that have 20-29 in their dates does not work properly.
For example, ab12-10-2010test.txt works but ab22-10-2010test.txt does not work.
Is there some problem with the regular expression.
Quote:#! python3
# renameDates.py - Renames filenames with American MM-DD-YYYY date format
# to European DD-MM-YYYY.
import shutil, os, re
# Create a regex that matches files with the American date format.
datePattern = re.compile(r"""^(.*?) # all text before the date
((0|1)?\d)- # one or two digits for the month
((0|1|2|3)?\d)- # one or two digits for the day
((19|20)\d\d) # four digits for the year
(.*?)$ # all text after the date
""", re.VERBOSE)
# Loop over the files in the working directory.
for amerFilename in os.listdir('.'):
mo = datePattern.search(amerFilename)
# Skip files without a date.
if mo == None:
continue
# Get the different parts of the filename.
beforePart = mo.group(1)
monthPart = mo.group(2)
dayPart = mo.group(4)
yearPart = mo.group(6)
afterPart = mo.group(8)
# Form the European-style filename.
euroFilename = beforePart + dayPart + '-' + monthPart + '-' + yearPart + afterPart
# Get the full, absolute file paths.
absWorkingDir = os.path.abspath('.')
amerFilename = os.path.join(absWorkingDir, amerFilename)
euroFilename = os.path.join(absWorkingDir, euroFilename)
# Rename the files.
print('Renaming "%s" to "%s"...' % (amerFilename, euroFilename))
shutil.move(amerFilename, euroFilename)
However, the files whose days that have 20-29 in their dates does not work properly.
For example, ab12-10-2010test.txt works but ab22-10-2010test.txt does not work.
Is there some problem with the regular expression.