whats does pipeline used in pyhton
import math
import os
import random
import re
import sys
if __name__ == '__main__':
n = int(raw_input().strip())
if (n % 2) == 0 & (2 < n < 6) & (n>20):
print ("not weird" )
elif (n % 2) == 1 & (6 < n < 20):
print ("weird")
else :
print ("weird")