Positively Identifying Python Variable Type

Question

Trying to figure out how to positively identify the variable types.

w = {} x = "" y = 2 z = [] a = type(w) b = type(x) c = type(y) d = type(z) print(a) print(b) print(c) print(d) if a == 'dict': print ("Ok - its a dict") elif a != 'dict': print ("Wrong - its not a dict") if b == 'str': print ("Ok - its a string") elif b != 'str': print ("Wrong - its not a string") if c == 'int': print ("Ok - its an int") elif c != 'int': print ("Wrong - its not an int") if d == 'list': print ("Ok - okay, its a list") elif d != 'list': print ("Wrong - its not a list")

Generates the following output:

<class 'dict'> <class 'str'> <class 'int'> <class 'list'>

The type() command generates a "class" structure, which makes it hard to positively identify the variable type in question.

Is there a way to get to the variable in the each class?

Dariyoush · Accepted Answer · 2021-12-11 19:33:34Z

you need to address python data types correctly.

'dict' is not a data type but a string, however, dict is. It is a python data type and it belongs to <class 'dict'>.

 w = {} z = [] a = type(w) b = type(z) if a == dict: print ("Ok - its a dict") else: print('it is not') if type(z) == list: print('z is a list') else: print('z is not a list')

output:

Ok - its a dict z is a list

egghead jr · Accepted Answer · 2021-12-11 19:46:00Z

I think, (please correct me if I am wrong), we are supposed to answer the final form of the question, yes? So here is my corrected code:

w = {} x = "" y = 2 z = [] a = type(w) b = type(x) c = type(y) d = type(z) print(a) print(b) print(c) print(d) if a == dict: print ("Ok - its a dict") elif a != dict: print ("Wrong - its not a dict") if b == str: print ("Ok - its a string") elif b != str: print ("Wrong - its not a string") if c == int: print ("Ok - its an int") elif c != int: print ("Wrong - its not an int") if d == list: print ("Ok - okay, its a list") elif d != list: print ("Wrong - its not a list")

Which generates the following output:

<class 'dict'> <class 'str'> <class 'int'> <class 'list'> Ok - its a dict Ok - its a string Ok - its an int Ok - okay, its a list

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