To determine common type following standard coercion rules, use the numpy.find_common_type() method in Python numpy. The 1st argument is a list of dtypes or dtype convertible objects representing arrays. The 2nd argument is A list of dtypes or dtype convertible objects representing scalars.
The find_common_type() method returns the common data type, which is the maximum of array_types ignoring scalar_types, unless the maximum of scalar_types is of a different kind (dtype.kind). If the kind is not understood, then None is returned.
Steps
At first, import the required library −
import numpy as np
Using the find_common_type() method in Numpy. Determine common type following standard coercion rules −
print("Result...",np.find_common_type([np.float32], [np.int64, np.float64])) print("Result...",np.find_common_type([], [np.int64, np.float32, complex])) print("Result...",np.find_common_type([np.float32], [np.int64, np.float64])) print("Result...",np.find_common_type([np.float32], [complex])) print("Result...",np.find_common_type([np.float64], [complex])) print("Result...",np.find_common_type(['f4', 'i4'], ['c8'])) print("Result...",np.find_common_type([np.int64], [complex])) print("Result...",np.find_common_type([np.int64], [np.float64]))
Example
import numpy as np # To determine common type following standard coercion rules, use the numpy.find_common_type() method in Python numpy # The 1st argument is a list of dtypes or dtype convertible objects representing arrays. # The 2nd argument is A list of dtypes or dtype convertible objects representing scalars. print("Using the find_common_type() method in Numpy\n") # Determine common type following standard coercion rules print("Result...",np.find_common_type([np.float32], [np.int64, np.float64])) print("Result...",np.find_common_type([], [np.int64, np.float32, complex])) print("Result...",np.find_common_type([np.float32], [np.int64, np.float64])) print("Result...",np.find_common_type([np.float32], [complex])) print("Result...",np.find_common_type([np.float64], [complex])) print("Result...",np.find_common_type(['f4', 'i4'], ['c8'])) print("Result...",np.find_common_type([np.int64], [complex])) print("Result...",np.find_common_type([np.int64], [np.float64]))
Output
Using the find_common_type() method in Numpy Result... float32 Result... complex128 Result... float32 Result... complex128 Result... complex128 Result... complex128 Result... complex128 Result... float64