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Determine if a class is a subclass of a second class in Python
To determine if a class is a subclass of a second class, use the numpy.issubclass_() method in Python numpy. The 1st argument is the input class. True is returned if arg1 is a subclass of arg2. The 2nd argument is the input class. If a tuple of classes, True is returned if arg1 is a subclass of any of the tuple elements. The issubclass_ is equivalent to the Python built-in issubclass, except that it returns False instead of raising a TypeError if one of the arguments is not a class.
Steps
At first, import the required library −
import numpy as np
Using the issubclass_() method in Numpy. Checking whether a class is a subclass of a second class −
print("Result...",np.issubclass_(np.float16, np.float32))
print("Result...",np.issubclass_(np.int32, np.signedinteger))
print("Result...",np.issubclass_('i4', np.signedinteger))
print("Result...",np.issubclass_(np.int64, int))
print("Result...",np.issubclass_(np.float64, float))
print("Result...",np.issubclass_('S8', str))
print("Result...",np.issubclass_(np.int16, float))
print("Result...",np.issubclass_(np.array([45, 89]), int))
print("Result...",np.issubclass_(np.int32, np.integer))Example
import numpy as np
# To determine if a class is a subclass of a second class, use the numpy.issubclass_() method in Python numpy
# The 1st argument is the input class. True is returned if arg1 is a subclass of arg2.
# The 2nd argument is the input class. If a tuple of classes, True is returned if arg1 is a subclass of any of the tuple elements.
# The issubclass_ is equivalent to the Python built-in issubclass,
# except that it returns False instead of raising a TypeError if one of the arguments is not a class.
print("Using the issubclass_() method in Numpy\n")
# Checking whether a class is a subclass of a second class
print("Result...",np.issubclass_(np.float16, np.float32))
print("Result...",np.issubclass_(np.int32, np.signedinteger))
print("Result...",np.issubclass_('i4', np.signedinteger))
print("Result...",np.issubclass_(np.int64, int))
print("Result...",np.issubclass_(np.float64, float))
print("Result...",np.issubclass_('S8', str))
print("Result...",np.issubclass_(np.int16, float))
print("Result...",np.issubclass_(np.array([45, 89]), int))
print("Result...",np.issubclass_(np.int32, np.integer))Output
Using the issubclass_() method in Numpy Result... False Result... True Result... False Result... False Result... True Result... False Result... False Result... False Result... True
Updated on: 25-Feb-2022
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