All the 4 Digit Number Combinations

It'll print every 4 digit combination from 0000 to 9999. 
These are used in many real world applications.

Author: abrahamalbert18

4 Digit Number Combinations.py

@@ -0,0 +1,18 @@
+#ALL the combinations of 4 digit combo
+def FourDigitCombinations():
+    numbers=[]
+    for code in range(10000):
+        if code<=9:
+            numbers.append(int("000"+str(code)))
+        elif code>=10 and code<=99:
+            numbers.append(int("00"+str(code)))
+        elif code>=100 and code<=999:
+            numbers.append(int("0"+str(code)))
+        else:
+            numbers.append(int(code))
+            
+    for i in numbers:
+        print str(i),   
+        
+    pass
+