#! 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 (must start with 19 or 20)
(.*?)$ # 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) # uncomment after testing
