How to retain decimal places in Python

How to retain the number of decimal places in python: first create a new py file, enter [a=('%.2f' % a)] to retain 2 decimal places; then if you enter [a=('%. 4f' % a)], to retain 4 decimal places; finally, you can also enter [a=format(a, '.2f')] to retain the number of decimal places.

The operating environment of this tutorial: windows7 system, pycharm2020 version, DELL G3 computer.

How to retain the number of decimal points in Python:

The first step is to open pycharm, create a new py file, and enter the

a=1.2222345
 
a=('%.2f' % a)
print(a)

code, as shown below As shown:

The second step, after running the py file, you can see that the decimal point of a retains 2 decimal places, as shown in the following figure:

The third step, if you enter a=('%.4f' % a), keep 4 decimal places, please note that it is rounded, as shown in the figure below ：

The fourth step, we can also enter a=format(a, '.2f') to retain the number of decimal points, as shown in the figure below Display:

The fifth step is to run the py file. You can see that 2 decimal places are retained and rounded as well, as shown in the following figure:

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