You are confusing float values with their string representation. float(3) is enough, and whenever you need to print one, use formatting.
va = float('3')
print format(va, '.2f')
print isinstance(va, float)
float objects themselves have no concept of a number of decimal places to track.
Top answer 1 of 2
9
You are confusing float values with their string representation. float(3) is enough, and whenever you need to print one, use formatting.
va = float('3')
print format(va, '.2f')
print isinstance(va, float)
float objects themselves have no concept of a number of decimal places to track.
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0
Just use float("3") to achieve that but notice that a float does not have a specific number of digits after the decimal point; that's more a feature of outputting a float using string formatting. So you can use '%.2f' % float("3") to see your float value with two decimal digits.
Your tests were all flawed in several aspects.
va = '%.2f' % float('3') created a str which looked like a float, not a float.
vb = float('%.2f' % float('3')) created a decent float but your printing test print vb then did not format the float to using two decimal digits after the point. It just used the default formatting (which prints one trailing .0 to make clear that this is not an int).
Top answer 1 of 13
400
Since this post might be here for a while, lets also point out python 3 syntax:
"{:.2f}".format(5)
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You could use the string formatting operator for that:
>>> '%.2f' % 1.234
'1.23'
>>> '%.2f' % 5.0
'5.00'
The result of the operator is a string, so you can store it in a variable, print etc.
Python string to float conversion
I don't know what you mean: >>> a = '1721244344.700249000' >>> float(a) 1721244344.700249 These are all the decimal places. Trailing zeros will always be omitted as they are irrelevant. If you want to show them, do so when you output the value: >>> print(a.format("{:.9}")) 1721244344.700249000 More on reddit.com
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July 29, 2024How to use the float() command to create 2 decimal places instead of one in a product of 2 numbers [the product is dollar amount]
You generally don't round until you go to display the value. You can use round for that, but since you just want to display it with two digits, you can use string formatting . In your case, something like print(f'{totalPay:.2f}'). .2f is the format specifier, saying round the float (f) to two decimal places (.2). More on reddit.com
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January 28, 2020Floating point numbers to two decimal places - possible with standard lib?
I’m trying to get 2 decimal places of 0s (e.g, 9.00) in the budget app project. I tried using string formatting, but the program expects a floating point number, not a string. Casting it to a float results in a single .0 because that’s how floating point numbers work in Python - that gets ... More on forum.freecodecamp.org
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August 24, 2022python - Float string number to float with 2 decimals? - Stack Overflow
Communities for your favorite technologies. Explore all Collectives · Stack Overflow for Teams is now called Stack Internal. Bring the best of human thought and AI automation together at your work More on stackoverflow.com
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ItSolutionstuff
itsolutionstuff.com › post › python-convert-string-to-float-with-2-decimal-places-exampleexample.html
Python Convert String to Float with 2 Decimal Places Example - ItSolutionstuff.com
October 30, 2023 - We first convert the string to a float using the float() function, and then round it to 2 decimal places using the round() function. Finally, we print the float_number variable, which will output 4.14.
Python Guides
pythonguides.com › convert-string-to-float-with-2-decimal-places-in-python
Convert String To Float With 2 Decimal Places In Python
May 16, 2025 - Read How to Remove Prefixes from Strings in Python? When converting strings to floats, especially from user input or external data sources, errors can occur if the string isn’t a valid number. def safe_float_convert(value_str, decimal_places=2): try: return round(float(value_str), decimal_places) except ValueError: print(f"Error: '{value_str}' cannot be converted to a float") return None # Examples print(safe_float_convert("45.67")) # Output: 45.67 print(safe_float_convert("$45.67")) # Error message and None
Finxter
blog.finxter.com › home › learn python blog › python string to float with 2 decimals: easy conversion guide
Python String to Float with 2 Decimals: Easy Conversion Guide - Be on the Right Side of Change
January 19, 2024 - In Python, the process of converting a string to a float involves using the float() function. This function takes a string as input and converts it to a floating point number, which is a number with a decimal point.
Reddit
reddit.com › r/learnpython › python string to float conversion
r/learnpython on Reddit: Python string to float conversion
July 29, 2024 -
Hi all, I have a string a = '1721244344.700249000', I want to convert it to a floating value.
Float() is returning only 2 places after decimal point. Like 1721244344.7
Is there a way I can convert the entire string to a floating point value and get all the decimal (upto 9 places after decimal point)?
I have to use python v2.7 for this.
Edit: I do not have problem in printing the all 9 decimal places but I need the floating value so that I can subtract another value so that I get the difference with accuracy upto 9 th decimal point.
Top answer 1 of 5
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I don't know what you mean: >>> a = '1721244344.700249000' >>> float(a) 1721244344.700249 These are all the decimal places. Trailing zeros will always be omitted as they are irrelevant. If you want to show them, do so when you output the value: >>> print(a.format("{:.9}")) 1721244344.700249000
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I have to use python v2.7 for this. ?????????!
Finxter
blog.finxter.com › home › learn python blog › 5 best ways to convert a python string to float with 2 decimals
5 Best Ways to Convert a Python String to Float With 2 Decimals - Be on the Right Side of Change
February 19, 2024 - This snippet first converts the string to a float, formats it to have two decimal places using the string format operator ‘%’, and then converts the formatted string back to a float, resulting in final_num. The format() function in Python is used to format a value into a specific format.
GeeksforGeeks
geeksforgeeks.org › python › how-to-round-floating-value-to-two-decimals-in-python
How to Round Floating Value to Two Decimals in Python - GeeksforGeeks
July 23, 2025 - f-strings can be used to round off a float value to two decimal places.
Dirask
dirask.com › snippets › python › python convert string to float with 2 decimal places
❤ 💻 python convert string to float with 2 decimal places - Dirask
1 2 3 4 5 6 7 text = '1.234' number = float(text) print(number) # 1.234 result = format(number, '.2f') print(result) # 1.23
Java2Blog
java2blog.com › format-a-float-to-two-decimal-places
How to Format Float to 2 Decimal Places in Python?
A blog on core java,data structures,algorithms and also on various frameworks like struts 2,spring,spring MVC,webservices, java design patterns
Analytics Vidhya
analyticsvidhya.com › home › 6 ways to round floating value to two decimals in python
6 Ways to Round Floating Value to Two Decimals in Python
November 4, 2024 - However, modern formatting methods ... To format a floating-point number with two decimal places in Python, you can use the .2f format specifier....
AskPython
askpython.com › python › built-in-methods › format-2-decimal-places
How to Format a Number to 2 Decimal Places in Python? - AskPython
February 27, 2023 - Then we provide our float value on which the action will take place in the format function. In the result, we are getting the same result using two different ways. You can check The Python float() Method for more knowledge on the float method.
Reddit
reddit.com › r/learnpython › how to use the float() command to create 2 decimal places instead of one in a product of 2 numbers [the product is dollar amount]
r/learnpython on Reddit: How to use the float() command to create 2 decimal places instead of one in a product of 2 numbers [the product is dollar amount]
January 28, 2020 -
Example:
hourlyRate = 20 hoursLabor = 1.6
I want the answer to show “32.00” instead of “32” or “32.0”.
What I have so far produces the number 32.0:
totalPay = float(hourlyRate * hoursLabor)
print(totalPay)
I’m obviously very new at this. Just getting some beginner’s practice :)
Top answer 1 of 2
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You generally don't round until you go to display the value. You can use round for that, but since you just want to display it with two digits, you can use string formatting . In your case, something like print(f'{totalPay:.2f}'). .2f is the format specifier, saying round the float (f) to two decimal places (.2).
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This should do it print(f'{totalPay:.2f}')
freeCodeCamp
forum.freecodecamp.org › curriculum help
Floating point numbers to two decimal places - possible with standard lib? - Curriculum Help - The freeCodeCamp Forum
August 24, 2022 - I’m trying to get 2 decimal places of 0s (e.g, 9.00) in the budget app project. I tried using string formatting, but the program expects a floating point number, not a string. Casting it to a float results in a single .0 because that’s how floating point numbers work in Python - that gets ...
PythonHow
pythonhow.com › how › limit-floats-to-two-decimal-points
Here is how to limit floats to two decimal points in Python
The format string specifies the desired formatting for the value, and the {:.2f} syntax specifies that the value should be formatted as a float with two decimal points. Both round and format can be used to limit floats to a fixed number of decimal points in Python.
GeeksforGeeks
geeksforgeeks.org › python › convert-string-to-float-in-python
Convert String to Float in Python - GeeksforGeeks
July 15, 2025 - It converts a string into a Decimal object, effectively avoiding common floating-point rounding errors. ... eval() function reads and runs a string as a Python expression. It can turn a numeric string like "33.28" into a float. However, it's risky to use with untrusted input because it can run harmful code.
Mimo
mimo.org › tutorials › python › how-to-convert-string-to-float-in-python
How to Convert String to Float in Python
Use float("3.14") to convert a numeric string to a float. Clean the string first for spaces and separators, then convert. Wrap conversion in try/except ValueError for messy input. Choose one comma strategy, thousands separators and comma decimals differ. Check for empty or whitespace-only strings ...
Stack Overflow
stackoverflow.com › questions › 49429798 › float-string-number-to-float-with-2-decimals
python - Float string number to float with 2 decimals? - Stack Overflow
Copydef float_(): price_data = {} str_num = '3.505,32' price_data['price'] = float(str_num.replace('.','').replace(',','.')) price_data['currency'] = 'USD' return price_data