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Return element-wise a copy of the string with uppercase characters converted to lowercase and vice versa in Numpy
To return element-wise a copy of the string with uppercase characters converted to lowercase and vice versa, use the numpy.char.swapcase() method in Python Numpy. For 8-bit strings, this method is locale-dependent.
The function swapcase() returns an output array of str or unicode, depending on input type. The numpy.char module provides a set of vectorized string operations for arrays of type numpy.str_ or numpy.bytes_.
Steps
At first, import the required library −
import numpy as np
Create a One-Dimensional array of strings −
arr = np.array(['Katie', 'JOHN', 'Kate', 'AmY', 'brADley'])
Displaying our array −
print("Array...
",arr)Get the datatype −
print("
Array datatype...
",arr.dtype)
Get the dimensions of the Array −
print("
Array Dimensions...
",arr.ndim)Get the shape of the Array −
print("
Our Array Shape...
",arr.shape)
Get the number of elements of the Array −
print("
Elements in the Array...
",arr.size)To return element-wise a copy of the string with uppercase characters converted to lowercase and vice versa, use the numpy.char.swapcase() method −
print("
Result (swapcases)...
",np.char.swapcase(arr))
Example
import numpy as np
# Create a One-Dimensional array of strings
arr = np.array(['Katie', 'JOHN', 'Kate', 'AmY', 'brADley'])
# Displaying our array
print("Array...
",arr)
# Get the datatype
print("
Array datatype...
",arr.dtype)
# Get the dimensions of the Array
print("
Array Dimensions...
",arr.ndim)
# Get the shape of the Array
print("
Our Array Shape...
",arr.shape)
# Get the number of elements of the Array
print("
Number of elements in the Array...
",arr.size)
# To return element-wise a copy of the string with uppercase characters converted to lowercase and vice versa, use the numpy.char.swapcase() method in Python Numpy
print("
Result (swapcases)...
",np.char.swapcase(arr))Output
Array... ['Katie' 'JOHN' 'Kate' 'AmY' 'brADley'] Array datatype... <U7 Array Dimensions... 1 Our Array Shape... (5,) Number of elements in the Array... 5 Result (swapcases)... ['kATIE' 'john' 'kATE' 'aMy' 'BRadLEY']
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