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 do not need to differentiate between an empty string and some other falsy value. To explicitly check for an empty string use the following:
if myString == "":
See the documentation on Truth Value Testing for other values that are false in Boolean contexts.
Answer from Andrew Clark on Stack Overflow Top answer 1 of 16
3167
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 do not need to differentiate between an empty string and some other falsy value. To explicitly check for an empty string use the following:
if myString == "":
See the documentation on Truth Value Testing for other values that are false in Boolean contexts.
2 of 16
567
From PEP 8, in the “Programming Recommendations” section:
For sequences, (strings, lists, tuples), use the fact that empty sequences are false.
So you should use:
if not some_string:
or:
if some_string:
Just to clarify, sequences are evaluated to False or True in a Boolean context if they are empty or not. They are not equal to False or True.
Python
bugs.python.org › issue28937
Issue 28937: str.split(): allow removing empty strings (when sep is not None) - Python tracker
December 11, 2016 - This issue tracker has been migrated to GitHub, and is currently read-only. For more information, see the GitHub FAQs in the Python's Developer Guide · This issue has been migrated to GitHub: https://github.com/python/cpython/issues/73123
What’s the difference between None and an Empty String (“ “)?
one of them is a string, with which you can do all the string stuff. the other is nothing More on reddit.com
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June 21, 2020.Empty string comprehension?
Hello everyone , I wrote this code that I understand except one detail in it , here’s the code : person_infos(first_name, last_name, age=''): person = {'first': first_name, 'last': last_name} if age: per… More on discuss.python.org
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March 14, 2020Is there a better way to make an empty string?
player_inputs = list(), or more pythonic, player_inputs = [] More on reddit.com
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January 22, 2020Meaning of empty string "" in this example
From the documentation : The separator between elements is the string providing this method. Maybe not so clear, but it means the iterable in str.join(iterable) will be joined with str as separtor. Some examples: >>> l = ['a', 'b', 'c'] >>> ''.join(l) 'abc' >>> ','.join(l) 'a,b,c' >>> '__'.join(l) 'a__b__c' >>> '! !'.join(l) 'a! !b! !c' More on reddit.com
5
1
November 6, 2022Videos
UX Design
uxdesign.cc › your-ai-agent-can-read-your-codebase-it-doesnt-know-your-product-b5ea0cd77989
Your AI agent can read your codebase. It doesn’t know your product. | by Gregory Muryn-Mukha | Apr, 2026 | UX Collective
3 weeks ago - Brand voice. Tone axes. CTA vocabulary. The empty-state triplet. The notification triplet. Anti-patterns: legacy copy that needs to be stripped on touch, typos that shipped, emoji from an earlier era. I grounded every rule in a real string pulled verbatim from the codebase.
Python
docs.python.org › 3 › library › collections.html
collections — Container datatypes
Class that simulates a string object. The instance’s content is kept in a regular string object, which is accessible via the data attribute of UserString instances. The instance’s contents are initially set to a copy of seq.
GeeksforGeeks
geeksforgeeks.org › python › initialize-empty-string-in-python
Initialize empty string in Python - GeeksforGeeks
July 23, 2025 - The simplest way to define an empty string is by using two quotation marks with nothing in between. These can be single (') or double (") quotes. Both are valid. ... You can also use Python’s built-in str() function to create an empty string.
Skytowner
skytowner.com › explore › checking_if_a_string_is_empty_in_python
Checking if a string is empty in Python
In Python any object can be tested for truth value (true or false). Empty sequences and collections such as '', (), [], {}, set(), range(0) are considered false. We can combine this with the boolean operation not x: ... As x is an empty string that has truth value false, not x returns True.
Boot.dev
boot.dev › lessons › 06a78273-7b14-4d5c-b0c1-1883bc065699
Learn to Code in Python: NoneType Variables | Boot.dev
Not all variables have a value. We can make an "empty" variable by setting it to None. None is a special value in Python that represents the absence of a value. It is not the same as zero, False, or an empty string.
Python
docs.python.org › 3 › library › string.html
string — Common string operations
“Format specifications” are used within replacement fields contained within a format string to define how individual values are presented (see Format string syntax, f-strings, and t-strings). They can also be passed directly to the built-in format() function. Each formattable type may define how the format specification is to be interpreted. Most built-in types implement the following options for format specifications, although some of the formatting options are only supported by the numeric types. A general convention is that an empty format specification produces the same result as if you had called str() on the value.
JanBask Training
janbasktraining.com › community › python-python › how-to-check-if-the-string-is-empty-in-python
How to check if the string is empty in Python? | JanBask Training Community
September 1, 2025 - To check if a string is empty in Python, there are several simple and effective methods you can use. An empty string in Python is represented as "", and it has a length of zero.
GeeksforGeeks
geeksforgeeks.org › python › python-program-to-check-if-string-is-empty-or-not
Check if String is Empty or Not - Python - GeeksforGeeks
July 11, 2025 - If len(s) == 0 then the string is empty. In Python, empty strings are treated as "Falsy".
Reddit
reddit.com › r/learnpython › what’s the difference between none and an empty string (“ “)?
r/learnpython on Reddit: What’s the difference between None and an Empty String (“ “)?
June 21, 2020 -
I recently came across a problem in a textbook where these 2 were interchangeable. So what’s the difference between these 2 and when to use which? Thanks!
Edit for context:
would like to clarify the use of None in this question to initialize the while loop, how does it initialize the loop?
start = None
while start != “”: start = int(input(“Start: “) . . .
Top answer 1 of 4
12
one of them is a string, with which you can do all the string stuff. the other is nothing
2 of 4
7
Well first of all, " " isn't an empty string, it's a string containing a single space. The empty string is "". But "" is only equivalent to None in a boolean context, because they are both falsy. That is, if you do: if my_var: and my_var is either of those (or 0, or an empty list, dict, etc) then it will be False. But otherwise these are completely different.
Python.org
discuss.python.org › python help
.Empty string comprehension? - Python Help - Discussions on Python.org
March 14, 2020 - Hello everyone , I wrote this code ... return person a = person_infos('fna', 'lna', age=34) print(a) The variable age in the function definition is an empty string , but we when set age as a number ( age = 4 ) no error happens , ...
akshay chugh
akshaychugh.xyz › writings › png › vercel-plugin-telemetry
The Vercel Plugin on Claude Code wants to read all your prompts! | akshay chugh
1 month ago - The hook matchers confirm it. The UserPromptSubmit matcher is literally an empty string - match everything. Install the plugin for your Next.js app, and it’s watching your Rust project, your Python scripts, your client work.
Python
docs.python.org › 3 › library › os.path.html
os.path — Common pathname manipulations
If list is empty, return the empty string ('').
Codemia
codemia.io › knowledge-hub › path › how_to_check_if_the_string_is_empty_in_python
How to check if the string is empty in Python?
Enhance your system design skills with over 120 practice problems, detailed solutions, and hands-on exercises
Sentry
sentry.io › sentry answers › python › check if a string is empty in python
Check if a string is empty in Python | Sentry
if my_string.strip() == "": print("my_string is an empty string!") else: print("my_string is not an empty string!") ... Tasty treats for web developers brought to you by Sentry. Get tips and tricks from Wes Bos and Scott Tolinski. SEE EPISODES ... David Y. — August 15, 2023 ... David Y. — July 15, 2023 · Write a list to a file in Python with each item on a new line
JanBask Training
janbasktraining.com › community › python-python › most-elegant-way-to-check-if-the-string-is-empty-in-python
Most elegant way to check if the string is empty in Python? | JanBask Training Community
March 9, 2021 - In Boolean context, sequences are evaluated either as FALSE or TRUE and empty strings are considered as false. To solve the error “python string is empty” you can simply check if the string is false using:
Python
docs.python.org › 3 › library › exceptions.html
Built-in Exceptions — Python 3.14.5rc1 documentation
The base class for all built-in exceptions. It is not meant to be directly inherited by user-defined classes (for that, use Exception). If str() is called on an instance of this class, the representation of the argument(s) to the instance are ...
MDN Web Docs
developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Global_Objects › String › replace
String.prototype.replace() - JavaScript | MDN
3 weeks ago - Its return value becomes the return ... provided by RegExp.prototype[Symbol.replace](). If the pattern is an empty string, the replacement is prepended to the start of the string....
PyPI
pypi.org › project › python-dotenv
python-dotenv · PyPI
This shouldn't be confused with FOO=, in which case the variable is associated with the empty string. python-dotenv can interpolate variables using POSIX variable expansion.
» pip install python-dotenv