After a long time

Author: banerjeesamrat

Chapter9-OrganizingFiles/renameDates.py

@@ -0,0 +1,47 @@
+#! /usr/bin/python3.5
+
+"""
+
+Author: Samrat Banerjee
+Dated: 26/06/2018
+Description: PROJECT- 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)