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w3schools.com › python › ref_func_str.asp

Python str() Function

The str() function converts the specified value into a string. ... Coding fundamentals as bite-sized lessons and challenges. ... If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail: ...

docs.python.org › 3 › builtins › stdtypes.html

Built-in Types — Python 3.14.8 documentation

Since Python’s floats are stored internally as binary numbers, converting a float to or from a decimal string usually involves a small rounding error. In contrast, hexadecimal strings allow exact representation and specification of floating-point numbers.

Discussions

In what cases do you use the str() function?

str() is used to generate a 'human readable string expression' for an object in python. Say for example , we have the following class in python: class Person: def __init__(self,name,age): self.name = name self.age = age print(Person('Anon',30)) This prints <__main__.Person object at 0x7f12b3fc7400> Which is a pointer to the memory address , not very helpful to comprehend. On the other hand , class Person: def __init__(self,name,age): self.name = name self.age = age def __str__(self): return f"Name:{name} Age:{age}" print(Person('Anon',30)) will print Name:Anon Age:30 which is more human readable ( kinda). The same thing happens with int - it has an inbuilt __str__ method which parses the input and converts it into a human readable string ( using ASCII/UTF-8 conversion or whatever). If you are still interested , I'd recommend going and reading up on __repr__ , which is similar to __str__ but is intended to be used via debugging rather than returning a string representation. Tbf , you can get around this using fstrings .... More on reddit.com

r/learnpython

8

8

July 16, 2021

What does __str__ method do?

Yeah, it's just so you can print it. If you try to print a variable that is not a string it won't know what to do, so when you make a __str__ method it's like saying "If I tell you to print this variable, this is how I want you to do that" More on reddit.com

r/learnpython

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November 14, 2020

Videos

How and When to Use .__str__() (Video) – Real Python

Class __str__ method - Python for Beginners - YouTube

November 9, 2023

__str__ Method | Python Tutorial - YouTube

October 25, 2023

Python built-in function: str() - YouTube

How to use str function in Python | Python functions made easy ...

developers.google.com › google for education › python › python strings

Python Strings | Python Education | Google for Developers

Python has a built-in string class named "str" with many handy features (there is an older module named "string" which you should not use). String literals can be enclosed by either double or single quotes, although single quotes are more commonly ...

realpython.com › ref › builtin-types › str

str | Python’s Built-in Data Types – Real Python

The built-in str data type represents sequences of characters and is used to manipulate textual data. Python strings are immutable sequences, meaning once defined, they can’t be changed.

geeksforgeeks.org › python › python-str-function

Python str() function - GeeksforGeeks

July 15, 2025 - The str() function in Python is an in-built function that takes an object as input and returns its string representation. It can be used to convert various data types into strings, which can then be used for printing, concatenation, and formatting.

programiz.com › python-programming › methods › built-in › str

Python str() (With Examples)

The str() function returns the string version of the given object. In this tutorial, we will learn about Python str() in detail with the help of examples.

reddit.com › r/learnpython › in what cases do you use the str() function?

r/learnpython on Reddit: In what cases do you use the str() function?

July 16, 2021 -

Title. I know you use it for integers, but in what context? Also, is it used for anything else?

str() is used to generate a 'human readable string expression' for an object in python. Say for example , we have the following class in python: class Person: def __init__(self,name,age): self.name = name self.age = age print(Person('Anon',30)) This prints <__main__.Person object at 0x7f12b3fc7400> Which is a pointer to the memory address , not very helpful to comprehend. On the other hand , class Person: def __init__(self,name,age): self.name = name self.age = age def __str__(self): return f"Name:{name} Age:{age}" print(Person('Anon',30)) will print Name:Anon Age:30 which is more human readable ( kinda). The same thing happens with int - it has an inbuilt __str__ method which parses the input and converts it into a human readable string ( using ASCII/UTF-8 conversion or whatever). If you are still interested , I'd recommend going and reading up on __repr__ , which is similar to __str__ but is intended to be used via debugging rather than returning a string representation. Tbf , you can get around this using fstrings ....

If you want to convert anything to a string. Any integers, floats, lists, any object that implements __str__() really. I believe when you print something, it converts it to a string. So if you want a string, thats what str() is for

cs.stanford.edu › people › nick › py › python-string.html

Similarly, if the start index is greater or equal to the end index, the slice is just the empty string. >>> s = 'Python' >>> s[2:999] 'thon' >>> s[3:2] # zero chars ''

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Python Reference

python-reference.readthedocs.io › en › latest › docs › str

str — Python Reference (The Right Way) 0.1 documentation

Returns a string containing a printable representation of an object.

w3schools.com › python › python_strings.asp

Like many other popular programming languages, strings in Python are arrays of unicode characters.

codecademy.com › docs › python › dunder methods › __str__()

Python | Dunder Methods | __str__() | Codecademy

April 24, 2025 - The __str__() dunder method, also known as a magic method, returns a human-readable string representation of a class object. It can be called with the built-in str() and print() functions.

docs.python.org › 3 › library › string.html

string — Common string operations

Split the argument into words using str.split(), capitalize each word using str.capitalize(), and join the capitalized words using str.join(). If the optional second argument sep is absent or None, runs of whitespace characters are replaced by a single space and leading and trailing whitespace are removed, otherwise sep is used to split and join the words. ... © Copyright 2001 Python Software Foundation.

datacamp.com › tutorial › python-string-tutorial

Python String Tutorial | DataCamp

January 18, 2018 - String is a collection of alphabets, words or other characters. It is one of the primitive data structures and are the building blocks for data manipulation. Python has a built-in string class named str. Python strings are "immutable" which means they cannot be changed after they are created.

reddit.com › r/learnpython › what does __str__ method do?

r/learnpython on Reddit: What does __str__ method do?

November 14, 2020 -

I'm still a beginner in python and my English is not really good, so I may have a little bit of understanding the explanation given in my course.

So I have this code:

class Apple:
    def __init__ (self,color,flavor):
        self.color=color
        self.flavor=flavor
        
    def __str__(self):
        return "This apple is {} and its flavor is {}".format(self.name,self.flavor)
        
jonagold=Apple("red","sweet")
print(jonagold)

The only purpose I see in using the __str__ method, I don't have to write the method in the print () line. If I changed the __str__ method with:

def say(self):
    return "This apple is {} and its flavor is {}".format(self.name,self.flavor)

I would just need to type

print(jonagold.say())

And I would get the same answer. What are the other purpose of using __str__? In what situation would I need to use the __str__?

Thank you :)

Yeah, it's just so you can print it. If you try to print a variable that is not a string it won't know what to do, so when you make a __str__ method it's like saying "If I tell you to print this variable, this is how I want you to do that"

From what I understand __str__ defines how an object of the class will be converted to a string. So like when you’re printing or if you did str(jonagold) Theoretically you could make your own method instead of using __str__ but it’s sort of pointless and isn’t as nice. Like would you rather do print(jonagold) or print(jonagold.say()) ? The second one has more ways it can go wrong especially if someone else is trying to use your class

freecodecamp.org › news › python-str-function-how-to-convert-to-a-string

Python str() Function – How to Convert to a String

April 4, 2023 - The str() function takes a compulsory non-string object and converts it to a string.

python-future.org › str_object.html

str — Python-Future documentation

The str object in Python 3 is quite similar but not identical to the Python 2 unicode object.

codecademy.com › docs › python › built-in functions › str()

Python | Built-in Functions | str() | Codecademy

January 1, 2022 - Takes in a value that can be converted into a string, and returns a copy of the value in the string datatype. If nothing is passed into str(), then an empty string is returned. ... Looking for an introduction to the theory behind programming?

stackoverflow.com › questions › 72350060 › how-to-use-str-function-to-return-a-string-representation-of-a-class

python - How to use __str__ function to return a string representation of a class - Stack Overflow

Here is an example:

def __str__(self):
    return f'({self.self.country},{self.self.code},{self.self.product}, {self.cost},{self.quantity })'

This way, when you assign values to a class, you can print its string representation

print(new_shoe)

More info here https://www.pythontutorial.net/python-oop/python-str/

docs.vultr.com › python › built-in › str()

Python str() - Convert to String

November 22, 2024 - The str() function in Python provides a simple yet powerful means of converting various data types into strings.

educative.io › answers › what-is-the-str-method-in-python

What is the __str__ method in Python?

The __str__ method in Python represents class objects as a string. It can be used as a debugging tool when the members of a class need to be checked.