# Python - How To Truncate Float in Python

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This tutorial will explain various methods to truncate a float in Python. The float truncation is used to make the calculation easier. We can truncate a float by either dropping the remaining digits or rounding it. We will look into both methods in this tutorial.

## Truncate a Float in Python Using the `round()` Function

The `round(number, n)` function takes a number as input and rounds it to `n` decimal places.

In case we want to truncate the float by rounding it, we can do so by using the `round()` function in Python. The below example code demonstrates how to use the `round()` function to truncate a float.

``print(round(1923334567124,4)) print(round(2345.1252342,4)) print(round(192.67,4)) ``

Output:

``1923334567124 2345.1252 192.67 ``

## Truncate a Float in Python Using the `int()` Function

Suppose we want to truncate a float by merely dropping the remaining digits after `n` decimal places. We can do so by first multiplying the float with the `10**n` where `n` the number of digits of the float we want to keep after the decimal. Then, convert it into an integer and divide it with the same `10**n` value. We can then convert it back into a float.

The below example code demonstrates how to truncate a float by dropping the remaining digit using the `int()` function in Python.

``def truncate(num, n):     integer = int(num * (10**n))/(10**n)     return float(integer)  print(truncate(1923334567124,4)) print(truncate(2345.1252342,4)) print(truncate(192.67,4)) ``

Output:

``1923334567124.0 2345.1252 192.6699 ``

## Truncate a Float in Python Using the `str()` Function

We can also truncate a float by dropping the remaining digits after `n` decimal places by first converting it into a string.

Once we convert the float into a string, we can look for the decimal point `.` in the string; if it exists, we can keep the `n` digits after it or complete float if it has less than `n` digits after the decimal point.

The below example code demonstrates how to use the `str()` function to truncate a float in Python.

``def truncate(num,n):     temp = str(num)     for x in range(len(temp)):         if temp[x] == '.':             try:                 return float(temp[:x+n+1])             except:                 return float(temp)           return float(temp)  print(truncate(1923334567124,4)) print(truncate(2345.1252342,4)) print(truncate(192.67,4)) ``

Output:

``1923334567124.0 2345.1252 192.67 ``