Use .format with string dictionary

Question

I want to use my dictionary parameter in my string Here is my dictionary

a = {"first_name": "ABC", "last_name": "PQR"}

Following statement gives correct output

"{first_name}{last_name}".format(**a)

But I want following output

"{ Hello {first_name} {last_name}.}".format(**a)
>>> '{ Hello ABC PQR.}'

It gives keyerror

KeyError                                  Traceback (most recent call last)
<ipython-input-50-84fc42fb81f2> in <module>()
----> 1 "{ Hello {first_name} {last_name}.}".format(**a)

KeyError: ' Hello {first_name} {last_name}'

Do you want it to print the first and last { } to the screen? (Is your desired output "{ Hello ABC PQR.}"?) — phogl, Jun 24 '16 at 10:00

Moses Koledoye · Answer 1 · 2016-06-24T10:08:35.470

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You don't need to include Hello in the formatting:

"{{Hello {first_name} {last_name}.}}".format(**a)

# "{Hello ABC PQR.}"

Use double curly braces {{}} to escape {}

edited Jun 24 '16 at 10:08

answered Jun 24 '16 at 09:56

Moses Koledoye

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Heh, misread the question. – Martijn Pieters Jun 24 '16 at 09:59
Actually I want "{Hello ABC PQR.}" , That is my requirement. – NIKHIL RANE Jun 24 '16 at 10:00
@MartijnPieters OP's question was not so clear, I have apparently made the same misinterpretation – Moses Koledoye Jun 24 '16 at 10:02

score 1 · Answer 2 · answered Jun 24 '16 at 10:03

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I think what you mean is

"{{ Hello {first_name} {last_name}.}}".format(**a)

answered Jun 24 '16 at 10:03

phogl

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score 0 · Accepted Answer · answered Jun 24 '16 at 10:03

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You can enter literal braces by doubling them:

>>> a = {"first_name": "ABC", "last_name": "PQR"}
>>> "{{ Hello {first_name} {last_name}.}}".format(**a)
'{ Hello ABC PQR.}'

answered Jun 24 '16 at 10:03

TigerhawkT3

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Use .format with string dictionary

3 Answers3