zipping-and-unzipping.py

# zipping: python 3 return a zip object, python 2 return a list of tuples
a = [1, 2, 3]
b = ['a', 'b', 'c']
zipped = zip(a, b) # This result will only live for once used then zipped will become empty

# to print value of zip
# 1 use for loop as a iterator
for x in zipped:
  print(x) # (1, 'a') ...
  
# 2 convert to list
zipped = list(zipped)
print(zipped) # [(1, 'a'), (2, 'b'), (3, 'c')]
  
# unzipping
# 1
x, y = zip(*zip(a, b))

# 2
zipped = zip(a, b)
x, y = zip(*zipped)
print(x, y) # (1, 2, 3) ('a', 'b', 'c')