#!/usr/bin/env python
# coding: utf-8

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from platform import python_version

python_version()


# # View the original blog post at [http://queirozf.com/entries/python-number-formatting-examples](http://queirozf.com/entries/python-number-formatting-examples)

# ## format float as integer

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'{:.0f}'.format(8.0)


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'{:.0f}'.format(8.99)


# ## round to 2 decimal places

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'{:.2f}'.format(8.499)


# ## format float as percentage

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'{:.2f}%'.format(10.12345)


# ## truncate to at most 2 decimal places
# 
# turn it into a string then replace everything after the second digit after the point

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import re

def truncate(num,decimal_places):  
    dp = str(decimal_places)
    return re.sub(r'^(\d+\.\d{,'+re.escape(dp)+r'})\d*$',r'\1',str(num))


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truncate(8.499,decimal_places=2)


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truncate(8.49,decimal_places=2)


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truncate(8.4,decimal_places=2)


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truncate(8,decimal_places=2)


# ## left padding with zeros

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# make the total string size AT LEAST 9 (including digits and points), fill with zeros to the left
'{:0>9}'.format(3.499)


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# make the total string size AT LEAST 2 (all included), fill with zeros to the left
'{:0>2}'.format(3)


# ## right padding with zeros
# 
# 

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# make the total string size AT LEAST 11 (including digits and points), fill with zeros to the RIGHT
'{:<011}'.format(3.499)


# ## comma separators

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"{:,}".format(100000)


# ## variable interpolation and f-strings

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num = 1.12745

formatted = f"{num:.2f}"

formatted


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