判断变量是否为某种类型

使用isinstance进行判断python基础类型

import numpy as np
a = 1
b = [1,2,3,4]
c = (1,2,3,4)
d = {'a':1,'b':2,'c':3}
e = "abc"
f = np.array(b)
if isinstance(a,int):
    print("a is int")
else:
    print("a is not int")
if isinstance(b,list):
    print("b is list")
else:
    print("b is not list")
if isinstance(c,tuple):
    print("c is tuple")
else:
    print("c is not tuple")
if isinstance(d,dict):
    print("d is dict")
else:
    print("d is not dict")
if isinstance(e,str):
    print("d is str")
else:
    print("d is not str")
if isinstance(f,np.ndarray):
    print("f is np.ndarray")
else:
    print("f is not np.ndarray")

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使用is进行判断基础类型

import numpy as np
a = 1
b = [1,2,3,4]
c = (1,2,3,4)
d = {'a':1,'b':2,'c':3}
e = "abc"
f = np.array(b)

if type(a) is int:
    print("a is int")
else:
    print("a is not int")
if type(b) is list:
    print("b is list")
else:
    print("b is not list")
if type(c) is tuple:
    print("c is tuple")
else:
    print("c is not tuple")
if type(d) is dict:
    print("d is dict")
else:
    print("d is not dict")
if type(e) is str:
    print("d is str")
else:
    print("d is not str")
if type(f) is np.ndarray:
    print("f is np.ndarray")
else:
    print("f is not np.ndarray")

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