Data Type Python

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  4. Anything with a non-zero length is true, empty sequences are false
if []:
   print "empty."
  
if [1]:
   print "not empty."
  
if ():
   print "empty."
  
if (1):
   print "not empty."
if {}:
   print "empty."
  
if {1:0}:
   print "not empty."