Menu
Does Python have something like an empty string variable where you can do:
if myString == string.empty: Regardless, what's the most elegant way to check for empty string values? I find hard coding "" every time for checking an empty string not as good.
480
To check if a string is empty or not, we can use the built-in empty() function in C++. The empty() function returns 1 if string is empty or it returns 0 if string is not empty. Similarly, we can also use the length() function to check if a given string is empty or not.
isEmpty(<string>)Checks if the <string> value is an empty string containing no characters or whitespace. Returns true if the string is null or empty.
To check an empty string in Python, use the len() function; if it returns 0, that means the string is empty; otherwise, it is not. So, if the string has something, it will count as a non-empty string; otherwise, it is an empty string.
The Java programming language distinguishes between null and empty strings. An empty string is a string instance of zero length, whereas a null string has no value at all. An empty string is represented as "" . It is a character sequence of zero characters.
Empty strings are "falsy" (python 2 or python 3 reference), which means they are considered false in a Boolean context, so you can just do this:
if not myString: This is the preferred way if you know that your variable is a string. If your variable could also be some other type then you should use myString == "". See the documentation on Truth Value Testing for other values that are false in Boolean contexts.
192
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
