How do i keep 4 decimal places in python?
I feel compelled to provide a counterpoint to Ashwini Chaudhary's answer. Despite appearances, the two-argument form of the Show The ability to round a (Python) float to some number of decimal places is something that's frequently requested, but turns out to be rarely what's actually needed.
The beguilingly simple answer
With a naive understanding of what So here's what's really happening in the example above. (deep breath) We're displaying a decimal representation of the nearest binary floating-point number to the nearest
In Python 2.7 and later, we have the pleasant situation that the two conversions in step 3 and 4 cancel each other out. That's due to Python's choice of
Unfortunately, this furthers the illusion that Python is storing values in decimal. Not so in Python 2.6, though! Here's the original example executed in Python 2.6:
Not only do we
round in the opposite direction, getting Short version: if you're using two-argument round, and you're expecting predictable behaviour from a binary approximation to a decimal round of a binary approximation to a decimal halfway case, you're asking for trouble. So enough with the "two-argument round is bad" argument. What should you be using instead? There are a few possibilities, depending on what you're trying to do.
How do you set decimal places in Python?Use str.. value = 3.3333333333.. formatted_string = "{:.2f}". format(value) format to two decimal places.. float_value = float(formatted_string). print(float_value). How do you round to 4 significant figures in Python?Use the round() Function to Round a Number to the Given Significant Digit in Python. The round() function rounds the given floating values to the nearest integer or specified decimal position. We can use a negative number to round the integer to the significant floor value by assigning it to the round() function.
How do you make multiple decimal places in Python?Use str. format() with “{:. 2f}” as string and float as a number to display 2 decimal places in Python.
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