Convert PyQt4 to PyQt5

convertQT4toQT5.py

import os, re, stat, sys, shutil

from PyQt5 import QtWidgets, QtCore

qtWidgets_modules = dir(QtWidgets)
qtCore_modules = dir(QtCore)

def fixFile(line_list):
	line_generator = iter(line_list)
	changed = False
	num = -1

	for each in line_generator:
		num += 1
		if 'from PyQt4 import' in each.strip():
			line_list[num] = 'from PyQt5 import QtWidgets, QtGui, QtCore\n'
			changed = True
			continue

		result = re.search('QtGui\.(\w+)', each)

		if result and result.group(1) in qtWidgets_modules:
			line_list[num] = each.replace('QtGui', 'QtWidgets')
			changed = True

		if result and result.group(1) in qtCore_modules:
			line_list[num] = each.replace('QtGui', 'QtCore')
			changed = True

	if changed:
		return ''.join(line_list)

def convert(main_path):
	for dirs, folders, files in os.walk(main_path):
		for each in [x for x in files if x.endswith('.py')]:
			file_path = os.path.join(dirs, each).replace(os.sep, '/')
			os.chmod(file_path, stat.S_IWRITE)

			with open(file_path, 'r+') as out_file:
				line_list = out_file.readlines()

			fixed_lines = fixFile(line_list)

			if fixed_lines:
				## Copy and rename file into a folder name old_qt4 so source is not lost
				dir_name, file_name = os.path.split(file_path)
				new_location = os.path.join(dir_name, 'old_qt4', file_name)
				shutil.copy(file_path, new_location)
				
				## Rewrite file with changes from Qt4 to Qt5
				with open(file_path, 'w+') as out_file:
					out_file.write(fixed_lines)

if __name__ == "__main__":
	## Get directory path from user
	folder_path = raw_input('Where is the directory that needs to be converted:')
	
	## Check if path is a directory
	if os.path.isdir(folder_path) :
		convert(main_path=folder_path)
		print('All ".py" files in %s have been converted to Qt5')
	else:
		print('File path: %s does not exists'%(folder_path))

@nicman23 - K, it's been updated. Thanks for the feedback!

How can I use it?

Hey @ParsaGhs -

I updated the script to be a bit more transparent. Run the file in a python terminal and it will ask you to put in the folder directory of the files you want to convert to Qt5. If the path exists and the python files it finds contain Qt4 it will convert them and copy the old file into a folder called old_qt4.

Let me know if you run into any issues

• Carlo

I am getting FileNotFoundError.

raw_input is for python 2.x. If you're using python 3 and above replace "raw_input" with "input"