Difference between revisions of "Python"
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Revision as of 02:03, 25 November 2019
Data Types
int 1234 >>> type(1234) <class 'int'> float 55.50 >>> type(55.50) <class 'float'> complex >>> type(6+4j) <class 'complex'> string hellow >>> type("hello") <class 'str'> Square list [1,2,3,4] >>> type([1,2,3,4]) <class 'list'> Round tuple (1,2,3,4) >>> type((1,2,3,4)) <class 'tuple'> Curly dict {1:"one", 2:"two", 3:"three"} >>> type({1:"one", 2:"two", 3:"three"}) <class 'dict'>
Python version of a perl hash
import collections ; def tree() : return collections.defaultdict(tree) hash = tree() hash[['outer_key']][['inner key']] = "value" ; if not bool(hash) : print "Hash is empty" ; else : print "Hash has some data"