CODEWITHSUNDEEP
pythonstring-formatting
mandeep
mandeep

Reputation: 11

How to use Python's str.format and pass named arguments where the name are defined by variables?

I want to print the statement:

"{C10} {C20}".format(C10=10, C20=20)

but I want to get the names C10 and C20 from other parts of the code, put them in variables, and then use the .format() method with these variable names.

I simply tried:

Parameter1 = 'C10'
Parameter2 = 'C20'

"{C10} {C20}".format(Parameter1=10, Parameter2=20)

and I get the KeyError.

Is there any way I can use do it using variables instead of hard coding the names C10 and C20 directly?

Upvotes: 1

Views: 75

Answers (2)

Abhay
Abhay

Reputation: 96

str.format accepts {} or a index inside the curly braces to assign the provided values as per the given index in the braces and not {variable_name}

You could just do it like this

parameter1 = 10
parameter2 = 20

formatted_string = "{} {}".format(parameter1, parameter2)

(Also the question lacks information required to answer this question)

Upvotes: 0

TheMainSuspect
TheMainSuspect

Reputation: 21

Parameter1 = 'C10'
Parameter2 = 'C20'
print("{C10} {C20}".format_map({Parameter1: 10, Parameter2: 20}))

Upvotes: 2

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