How to check if the Python String is empty or not? In python, there are several ways to check if the string is empty or not. Empty strings are considered as false meaning they are false in a Boolean context. An empty check on a string is a very common and most-used expression in ...
To check if a string is empty using the equality operator, we can just compare the string with another empty string. If the result is True, the input string is empty. Otherwise not.input_string="" print("The input string is:",input_string) if input_string=="": print("Input string ...
"iflen(str1)>0:print("The string is not empty.")else:print("The string is empty.") 1. 2. 3. 4. 5. 6. 在上面的代码中,我们首先定义了一个字符串变量str1,并通过if语句判断该字符串的长度是否大于0。如果字符串不为空,就输出"The string is not empty.“;如果字符串为空,就输出"The stri...
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") ...
# Replace the decimal point with an empty string num_str_no_decimal = num_str.replace('.', '', 1) if num_str_no_decimal.isdigit(): print(num_str) 5. Regular Expression – Check if a String is a Float Number Regular expressions (regex) can be used to check if a string matches ...
Let’s check our first character string my_string1: print(any(c.isalpha()forcinmy_string1))# Check if letters are contained in string# True As you can see, the logical value True has been returned, i.e. our first example string contains alphabetical letters. ...
Check if String Contains Substring in Python By: Rajesh P.S.Verifying the presence of a substring within a string is a frequent and fundamental task in various programming languages. Python provides a diverse array of methods to tackle this task effectively. The most straightforward and efficient ...
Get Your Code:Click here to download the free sample codethat you’ll use to check if a string contains a substring. Take the Quiz:Test your knowledge with our interactive “How to Check if a Python String Contains a Substring” quiz. You’ll receive a score upon completion to help you...
In order to avoid thisTraceback Error, we can use the keywordinto check if a substring is contained in a string. In the case of Loops, it was used for iteration, whereas in this case it’s a conditional that can be eithertrueorfalse.It’ll be true if the substring is part of the...
The following code uses the type() function to check if a given variable is of the string type in Python. 1 2 3 4 5 var1 = "football" sol = type(var1) == str print("Is it a string? ", sol) The above code provides the following output: Is it a string? True Check if ...