String Comparison in NumPy

Introduction

NumPy is home to a lot of mathematical and computational operations in Python. Strings have a lot of uses in Computer Science. NLP, Machine Learning is just the surface of their applications. In this article, we will look at the various methods by which we can compare and analyze strings using NumPy.

NumPy String Comparision

1. Equal function

The NumPy char class equal() method is used to check for equality between two strings, as the name implies. In contrast to numpy.equal, the comparison is conducted by first removing whitespace letters from the tail of the string and then returning a boolean result: true if there is a match and false otherwise. Let us now look at its syntax.

Syntax :

For an improved understanding, consider the example below.

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2. Not equal function

The NumPy char class not equal() method is used to determine whether or not the provided strings are different. If there is no match, it returns true; otherwise, it returns false. NumPy's not equal() function has the following syntax:

Syntax :

For example

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3. Greater equal function

The NumPy char class greater equal() method is used to determine if the first string is larger or equal to the second string. If our first string is more significant than or equal to the second string, it returns true; otherwise, it returns false. The following is the syntax for NumPy's greater equal() function:

Syntax :

An example:

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Output :

4. Lesser equal function

Unlike the function presented in the previous section, the NumPy char class less_equal() method is employed to determine whether our first string is smaller or equal to our second string. The syntax for NumPy's less_equal() function is as follows:

Syntax :

Consider the following example to properly grasp the less_equal() method.

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5. Greater function

The NumPy char class greater() function is employed to determine whether our first string is more prominent than our second string. Let us look at its syntax now.

Syntax :

The following example will help you better grasp the greater() function.

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6. Lesser function

The less() function of the NumPy char class is employed to determine whether our first string is smaller than our second string. It is the inverse of the more significant function mentioned in the previous section. Let us now look at its syntax.

Syntax :

Consider the following illustration:

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7. Compare Character Array function

The compare chararrays() function of the NumPy char class compares two string arrays element by element using the comparison operator provided by the cmp argument. Now let's examine its syntax.

Syntax :

Consider the following illustration:

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Output :