Check If String is Integer in Python

numpy string operations | isdigit() function

Last Updated : 14 Jan, 2019

numpy.core.defchararray.isdigit(arr) function returns True for each element if all characters in the string are digits and there is at least one character; returns false otherwise.

Parameters: arr : array_like of str or unicode. Returns : [ndarray] Output array of bools.

Code #1 :

Python3

# Python program explaining
# numpy.char.isdigit() method 

import numpy as geek

# input array contains only digits
in_arr = geek.array([ '1000', '2000'] )
print ("Input array : ", in_arr) 

out_arr = geek.char.isdigit(in_arr)
print ("Output array: ", out_arr)

Output:

Input array :  ['1000' '2000']
Output array:  [ True  True]

Code #2 :

Python3

# Python program explaining
# numpy.char.isdigit() method 

import numpy as geek

# input array contains digits along with space and alphabets
in_arr = geek.array([ '1000 2', 'a1000', '1234 ab'] )
print ("Input array : ", in_arr) 

out_arr = geek.char.isdigit(in_arr)
print ("Output array: ", out_arr)

Output:

Input array :  ['1000 2' 'a1000' '1234 ab']
Output array:  [False False False]

Check If String is Integer in Python

J

jana_sayantan

Improve

Article Tags :

Practice Tags :

python

Similar Reads

numpy string operations | isdecimal() function

numpy.core.defchararray.isdecimal(arr) function returns True for each element if there are only decimal characters in the element.It returns false otherwise. Parameters: arr : array_like of str or unicode. Returns : [ndarray] Output array of bools. Code #1 : Python3 # Python program explaining # num

numpy string operations | isnumeric() function

numpy.core.defchararray.isnumeric(arr) function returns true for each element if there are only numeric characters and there is at least one character.It returns false otherwise. Parameters: arr : array_like of str or unicode. Returns : [ndarray] Output array of bools. Code #1 : Python3 # Python pro

Python String isdigit() Method

The isdigit() method is a built-in Python function that checks if all characters in a string are digits. This method returns True if each character in the string is a numeric digit (0-9) and False otherwise. Example:Pythona = "12345" print(a.isdigit()) b = "1234a5" print(b.isdigit())OutputTrue False

Convert String to Int in Python

In Python, converting a string to an integer is important for performing mathematical operations, processing user input and efficiently handling data. This article will explore different ways to perform this conversion, including error handling and other method to validate input string during conver

Check If String is Integer in Python

In this article, we will explore different possible ways through which we can check if a string is an integer or not. We will explore different methods and see how each method works with a clear understanding.Example:Input2 : "geeksforgeeks"Output2 : geeksforgeeks is not an IntigerExplanation : "gee

Python | math.gcd() function

In Python, math module contains a number of mathematical operations, which can be performed with ease using the module. math.gcd() function compute the greatest common divisor of 2 numbers mentioned in its arguments. Syntax: math.gcd(x, y) Parameter: x : Non-negative integer whose gcd has to be comp