import re
strings_of_text = ['data0', 'data23', 'data2', 'data55', 'data_mismatch', 'green']
strings_to_keep = []
expression_to_use = r'data\d+$'
strings_of_text = list(filter(lambda x: re.match(expression_to_use, x), strings_of_text))
print(strings_of_text)
aW1wb3J0IHJlCnN0cmluZ3Nfb2ZfdGV4dCA9IFsnZGF0YTAnLCAnZGF0YTIzJywgJ2RhdGEyJywgJ2RhdGE1NScsICdkYXRhX21pc21hdGNoJywgJ2dyZWVuJ10Kc3RyaW5nc190b19rZWVwID0gW10KZXhwcmVzc2lvbl90b191c2UgPSByJ2RhdGFcZCskJwogCnN0cmluZ3Nfb2ZfdGV4dCA9IGxpc3QoZmlsdGVyKGxhbWJkYSB4OiByZS5tYXRjaChleHByZXNzaW9uX3RvX3VzZSwgeCksIHN0cmluZ3Nfb2ZfdGV4dCkpCnByaW50KHN0cmluZ3Nfb2ZfdGV4dCkK