Modify format based on pylint

Author: luke-zhou

four_digit_num_combination.py

@@ -1,13 +1,16 @@
+""" small script to learn how to print out all 4-digit num"""
+
 # ALL the combinations of 4 digit combo
-def FourDigitCombinations():
-    numbers=[]
+def four_digit_combinations():
+    """ print out all 4-digit numbers in old way"""
+    numbers = []
     for code in range(10000):
-        code=str(code).zfill(4)
+        code = str(code).zfill(4)
         print(code)
         numbers.append(code)
 
 # Same as above but more pythonic
-def oneLineCombinations():
+def one_line_combinations():
     """ print out all 4-digit numbers """
     numbers = [str(i).zfill(4) for i in range(10000)]
     print(numbers)