Multiple variable declaration

var1, var2 = {}, {}

None

None is a null or no value.

x = None

None is not the same as 0, False, or an empty string.

x = None

if x:
  print("Do you think None is True?")
elif x is False:
  print ("Do you think None is False?")
else:
  print("None is not True, or False, None is just None...")