The not operator is a logical operator that returns True if the value or expression is False, and False if the value or expression is True. So if we specify not before the string in the if condition, It will become True when the string is empty and False when the string is not empty...
In Python, Check if Variable Is None and Check if Variable Is null have same solutions as meaning of both queries is same. 1. Introduction In Python Programming, checking when a variable is None(Python equivalent of null or nil in other languages) is a common task, particularly in functions...
First, we define a function calledIf_TextFileEmpty()and create a variable calledmy_fileinside the function. We will call thePath()class and define a file’s path; we putrbefore the string to avoid a unicode error. my_file=Path(r"C:\Users\Dell\Desktop\demo\files\Mytextfile.txt") ...
Python program to check if a variable is either a Python list, NumPy array, or pandas series# Importing pandas package import pandas as pd # Importing numpy package import numpy as np # Creating a list l = [1, 2, 3, 4, 5] # Creating a numpy array arr = np.arra...
To check if a string is empty or whitespace using the len() function in Python, we will use the following steps.First, we will find the length of the input string using the len() function. We will store the length in a variable str_len. Now, we will check if the length of the...
'Variable is not a tuple' Using isinstance() function Similarly, we can also use theisinstance()function in Python to check if a given variable is tuple. Theisinstance()function takes the two arguments, the first argument isobject, and the second argument istypethen It returnsTrueif a given...
Python | Check if a variable is a string: Here, we are going to learn how to check whether a given variable is a string type or not in Python programming language? By IncludeHelp Last updated : February 25, 2024 Python | Check if a variable is a string...
In this post, we will see what is a string in Python and how to check whether a given variable is a string or not. Table of Contents [hide] How to check if a given variable is of the string type in Python? Using the isinstance() function. Using the type() function. Check if ...
Not none In Python, “not none” is a boolean expression that evaluates to True if there is at least one item in a list, and False otherwise. How to : empty in python def empty(self): for i in range(len(self)): self[i] = ”...
You can check if a variable is an integer using the type() function, passing the variable as an argument, and then comparing the result to the int class:age = 1 type(age) == int #TrueOr using isinstance(), passing 2 arguments: the variable, and the int class:...