NumPy: isupper() function

numpy.core.defchararray.isupper() function

The numpy.core.defchararray.isupper() function returns true for each element if all cased characters in the string are uppercase and there is at least one character, false otherwise.

Version: 1.15.0

Syntax:

numpy.core.defchararray.isupper(a)

Parameter:

Return value:

out : ndarray - Output array of bools

Note:

The 'chararray' class exists for backwards compatibility with Numarray, it is not recommended for new development. Starting from numpy 1.4, if one needs arrays of strings, it is recommended to use arrays of 'dtype' 'object_', 'string_' or 'unicode_', and use the free functions in the 'numpy.char' module for fast vectorized string operations.

Some methods will only be available if the corresponding string method is available in your version of Python.

The preferred alias for 'defchararray' is 'numpy.char'.

Example-1: numpy.isupper() function

>>> import numpy as np
>>> x = np.char.isupper('the quick brown fox')
>>> x
array(False)

Pictorial Presentation:

Example-2: numpy.isupper() function

>>> import numpy as np
>>> y = np.char.isupper('THE QUICK BROWN FOX')
>>> y
array(True)

Pictorial Presentation:

Example-3: numpy.isupper() function

>>> import numpy as np
>>> z = np.char.isupper('THE quick brown fox')
>>> z
array(False)

Pictorial Presentation:

Python - NumPy Code Editor:

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