W3Schools
w3schools.com › python › python_string_formatting.asp
Python String Formatting
F-String was introduced in Python 3.6, and is now the preferred way of formatting strings.
Python documentation
docs.python.org › 3 › tutorial › inputoutput.html
7. Input and Output — Python 3.14.7 documentation
The % operator (modulo) can also be used for string formatting. Given format % values (where format is a string), % conversion specifications in format are replaced with zero or more elements of values. This operation is commonly known as string interpolation.
Why should I use %d and %s to format Strings?
So from what I gather from the responses, it's good to know and recognise the %d and %s format, but in general nowadays people just use f-strings? More on reddit.com
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September 14, 2021string - How to format a floating number to fixed width in Python - Stack Overflow
How do I format a floating number to a fixed width with the following requirements: Leading zero if n More on stackoverflow.com
Using multiple arguments for string formatting in Python (e.g., '%s ... %s') - Stack Overflow
I have a string that looks like '%s in %s' and I want to know how to separate the arguments so that they are two different %s. My mind coming from Java came up with this: '%s in %s' % unicode(self.... More on stackoverflow.com
is there any difference between using string.format() or an fstring?
Don't forget that f-strings haven't been around forever. It may be partly old habits, it may be not keeping up to date with features, they may still be wanting to target a minimum python version that didn't support f-strings. I'd tend to prefer to use f-strings, but I wouldn't crucify someone for using perfectly valid language constructs. More on reddit.com
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October 9, 202208:20
How to Use f-Strings (Formatted Strings) in Python - YouTube
Python f-Strings - Advanced String Formatting tutorial for beginners ...
12:07
A Complete Guide to Python String Formatting - YouTube
12:47
Python string format 💬 - YouTube
06:12
The Python String .format() Method - YouTube
04:25
Python: String Formatting | str.format() | f strings and more...
Python
docs.python.org › 3 › library › string.html
string — Common string operations
It is exposed as a separate function for cases where you want to pass in a predefined dictionary of arguments, rather than unpacking and repacking the dictionary as individual arguments using the *args and **kwargs syntax. vformat() does the work of breaking up the format string into character data and replacement fields.
GeeksforGeeks
geeksforgeeks.org › python › string-formatting-in-python
String Formatting in Python - GeeksforGeeks
The format uses placeholder names formed by $ with valid Python identifiers (alphanumeric characters and underscores). Surrounding the placeholder with braces allows it to be followed by more alphanumeric letters with no intervening spaces.
Published: March 18, 2026
PyFormat
pyformat.info
PyFormat: Using % and .format() for great good!
With new style formatting it is possible (and in Python 2.6 even mandatory) to give placeholders an explicit positional index.
DEV Community
dev.to › erictleung › print-fixed-fields-using-f-strings-in-python-26ng
Print fixed fields using f-strings in Python - DEV Community
August 20, 2020 - Formatting strings in Python is very common. Older styles use a combination of % and .format() to for...
Bentley
cissandbox.bentley.edu › sandbox › wp-content › uploads › 2022-02-10-Documentation-on-f-strings-Updated.pdf pdf
Updated 2022 A Guide to Formatting with f-strings in Python
The release of Python version 3.6 introduced formatted string literals, simply called “f-strings.”
Mimo
mimo.org › glossary › python › formatted-strings
Python Formatted Strings / f-string formatting Guide
Introduced in Python 3.6, f-strings use curly braces ({ and }) to embed Python expressions inside string literals. The most modern and recommended way to format strings in Python is by using f-strings (formatted string literals).
Cornell Virtual Workshop
cvw.cac.cornell.edu › python-intro › input-output › string-formatting
Cornell Virtual Workshop > Introduction to Python Programming > Input/Output > String Formatting
One of the important methods in class str is str.format(). It applies formatting and variable substitution to a given string.. The string is filled in with the supplied set of arguments, according to format rules.
Real Python
realpython.com › python-string-formatting
Python String Formatting: Available Tools and Their Features – Real Python
December 1, 2024 - In this tutorial, you'll learn about the main tools for string formatting in Python, as well as their strengths and weaknesses. These tools include f-strings, the .format() method, and the modulo operator.
Reddit
reddit.com › r/learnpython › why should i use %d and %s to format strings?
r/learnpython on Reddit: Why should I use %d and %s to format Strings?
September 14, 2021 -
What would be the benefit, if any, of formatting strings like this:
name = "Bob"
age = 23
print("%s is %d years old." % (name, age))When I can just do:
print(name + " is " + str(age) + " years old.")
Thanks for any help!
mkaz.blog
mkaz.blog › working-with-python › string-formatting
Python String Formatting: Complete Guide - mkaz.blog
The % formatting method is Python’s oldest string formatting approach, but it’s error-prone and less readable than modern alternatives.
Top answer 1 of 14
730
numbers = [23.23, 0.1233, 1.0, 4.223, 9887.2]
for x in numbers:
print("{:10.4f}".format(x))
prints
23.2300
0.1233
1.0000
4.2230
9887.2000
The format specifier inside the curly braces follows the Python format string syntax. Specifically, in this case, it consists of the following parts:
- The empty string before the colon means "take the next provided argument to
format()" – in this case thexas the only argument. - The
10.4fpart after the colon is the format specification. - The
fdenotes fixed-point notation. - The
10is the total width of the field being printed, lefted-padded by spaces. - The
4is the number of digits after the decimal point.
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It has been a few years since this was answered, but as of Python 3.6 (PEP498) you could use the new f-strings:
numbers = [23.23, 0.123334987, 1, 4.223, 9887.2]
for number in numbers:
print(f'{number:9.4f}')
Prints:
23.2300
0.1233
1.0000
4.2230
9887.2000
Python
peps.python.org › pep-3101
PEP 3101 – Advanced String Formatting | peps.python.org
This PEP proposes a new system for built-in string formatting operations, intended as a replacement for the existing ‘%’ string formatting operator.
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Mark Cidade's answer is right - you need to supply a tuple.
However from Python 2.6 onwards you can use format instead of %:
'{0} in {1}'.format(unicode(self.author,'utf-8'), unicode(self.publication,'utf-8'))
Usage of % for formatting strings is no longer encouraged.
This method of string formatting is the new standard in Python 3.0, and should be preferred to the % formatting described in String Formatting Operations in new code.
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If you're using more than one argument it has to be in a tuple (note the extra parentheses):
'%s in %s' % (unicode(self.author), unicode(self.publication))
As EOL points out, the unicode() function usually assumes ascii encoding as a default, so if you have non-ASCII characters, it's safer to explicitly pass the encoding:
'%s in %s' % (unicode(self.author,'utf-8'), unicode(self.publication('utf-8')))
And as of Python 3.0, it's preferred to use the str.format() syntax instead:
'{0} in {1}'.format(unicode(self.author,'utf-8'),unicode(self.publication,'utf-8'))
OpenStax
openstax.org › books › introduction-python-programming › pages › 3-2-formatted-strings
3.2 Formatted strings - Introduction to Python Programming | OpenStax
March 13, 2024 - A formatted string literal (or f-string) is a string literal that is prefixed with "f" or "F". A replacement field is an expression in curly braces ({})...
Reddit
reddit.com › r/python › is there any difference between using string.format() or an fstring?
r/Python on Reddit: is there any difference between using string.format() or an fstring?
October 9, 2022 -
Every time i see someone use format() instead of an fstring i get confused considering fstring has much more readability and is a lot more merciful on the programmer when there is more than 1 variable going into the string.
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Don't forget that f-strings haven't been around forever. It may be partly old habits, it may be not keeping up to date with features, they may still be wanting to target a minimum python version that didn't support f-strings. I'd tend to prefer to use f-strings, but I wouldn't crucify someone for using perfectly valid language constructs.
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format() can make more sense if you want to prepare the string you're formatting outside the scope of the variables you're formatting it with.
Reddit
reddit.com › r/learnpython › what's better to use? (%), (f"string") or (.format())?
r/learnpython on Reddit: What's better to use? (%), (f"string") or (.format())?
November 25, 2024 -
I was trying to make a, silly program in which you can do some random things. I used arguments (%)in the past, but it's a bit hard to write like the identification of the variable, like there is so much types (%s, %f, %2f, %d, %g, %e...) and I want to take the easiest to write or the easiest to debug.
here are some examples of using each one:
using (%):
name = "Imaginary_Morning"
age = 13
print("This profile is called %s and it has %d years old." % (name, age))
using (f"string"):
name = "Imaginary_Morning"
age = 13
print(f"This profile is called {name} and it has {age} years old.")
using (.format()):
name = "Imaginary_Morning"
age = 13
print("This profile is called {} and it has {} years old.".format(name, age))W3Schools
w3schools.com › python › ref_string_format.asp
Python String format() Method
Remove List Duplicates Reverse ... Python Interview Q&A Python Training ... The format() method formats the specified value(s) and insert them inside the string's placeholder....
UC Berkeley Statistics
stat.berkeley.edu › ~spector › extension › python › notes › node42.html
Formatting Strings
Next: Using Names in Format Up: Input and Output Previous: The print command   Contents · In python, string formatting is performed through overloading of the percent operator (%) for string values. On the left hand side of the operator, you provide a string which is a combination of literal ...