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...
#myString is not None AND myString is not empty or blank return True #myString is None OR myString is empty or blank return False 1. 2. 3. 4. 5. 6. 上面代码的更简洁形式: def isBlank (myString): return not (myString and myString.strip()) def isNotBlank (myString): return bo...
if test_str == "": True when a string is empty.False when a string has a value. if "".__eq__(test_str): True when a string is empty.False when a string has a value. if len(test_str) == 0: True when a string is empty.False when a string has a value.Python String Emp...
Thefloat()function can be used to check if a string is a floating-point number in Python, actually, this method converts a string to a floating-point number however, we can use this to check string contains a float value. When passed a string that cannot be converted to a float, it ...
Python Data TypesUsing float() def isfloat(num): try: float(num) return True except ValueError: return False print(isfloat('s12')) print(isfloat('1.123')) Run Code Output False True Here, we have used try except in order to handle the ValueError if the string is not a float. In th...
# Python program to check if a string is # palindrome or not # function to check palindrome string def isPalindrome(string): rev_string = string[::-1] return string == rev_string # Main code x = "Google" if isPalindrome(x): print(x,"is a palindrome string") else: print(x,"is...
Different methods to check if a string contains another string Python string supportsinoperator. So we can use it to check if a string is part of another string or not. Theinoperator syntax is: subinstr Copy It returnsTrueif “sub” string is part of “str”, otherwise it returnsFalse. ...
size() == 0; } int main() { string string1("This is a non-empty string"); string string2; checkEmptyString(string1) ? cout << "[ERROR] string is empty!" << endl : cout << "string value: " << string1 << endl; checkEmptyString(string2) ? cout << "[ERROR] string is ...
Enter a number: 1234 <class 'str'> As you can see, the input is a number but when we check its data type, it is shown as a string. Now, how do we know if the input is actually a numerical value? In Python, we can check if an input is a number or a string: ...
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...