python decimal context output

Question

I want to output certain decimal variables with certain formatting, and my understanding is you do this with contexts from the decimal class. How would I go about doing this?

 x = decimal.Decimal(2000.0)

And now I want to print this in the format $2,000.00 How would I go about doing that with a context?

check this link https://stackoverflow.com/questions/2389846/python-decimals-format — shubham johar, May 22 '18 at 04:17
Also see: https://stackoverflow.com/questions/320929/currency-formatting-in-python — l'L'l, May 22 '18 at 04:22
You *do not* need the context output, also they cannot deal with comma separators. Formatted output is sufficient to answer your question. — Ṃųỻịgǻňạcểơửṩ, May 22 '18 at 04:49
This is what I am wanting to do per this recipe: https://docs.python.org/2/library/decimal.html#recipes the moneyfmt function that they show. — Jasonca1, May 22 '18 at 14:44

Potion · Answer 1 · 2018-05-22T04:34:04.223

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val = 2000
print("${:.2f}".format(float(val)))   # This outputs $2000.00 (no comma)

But to add to comma you simply add it between the colon and decimal like so:

print("${:,.2f}".format(float(val)))   # This outputs $2,000.00 (with comma)
money = 65434562338.89
print("${:,.2f}".format(float(money))) # Outputs: $65,434,562,338.89

The :.2f formats the output so that only 2 decimal places are displayed where :.3f will show 3 decimals like $2000.000 and so forth.

edited May 22 '18 at 04:34

answered May 22 '18 at 04:22

Potion

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Ive added it to my solution – Potion May 22 '18 at 04:34
So this snippet is from the python documentation in the decimal module: – Jasonca1 May 22 '18 at 14:43
This was quickly done within the console. – Potion May 24 '18 at 02:05

donkopotamus · Answer 2 · 2018-05-22T04:37:14.460

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Try:

>>> "${:,.2f}".format(decimal.Decimal(2000))
'$2,000.00'

>>> "${:,.2f}".format(decimal.Decimal("2000.987"))
'$2,000.99'

>>> "${:,.2f}".format(decimal.Decimal("1000000.1"))
'$1,000,000.10'

>>> "${:,.2f}".format(decimal.Decimal("123456789123456789123456789.12345"))
'$123,456,789,123,456,789,123,456,789.12'

edited May 22 '18 at 04:37

answered May 22 '18 at 04:30

donkopotamus

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score 0 · Answer 3 · edited Jul 25 '18 at 20:48

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Try locale module

Example code:

import locale

x = 2000.00
locale.setlocale( locale.LC_ALL, '' )
locale.currency( x )
locale.currency( x, grouping=True )

Output:

'$2,000.00'

Reference: Currency formatting in Python

Documentation: https://docs.python.org/2/library/locale.html

edited Jul 25 '18 at 20:48

marc_s

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answered May 22 '18 at 04:28

kusol.watchara

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Changing the `locale` causes a global change in behaviour for all threads in a program simply to satisfy printing a number. – donkopotamus May 22 '18 at 04:34

python decimal context output

3 Answers3