Using a format string with literal braces

Question

Code = "00000"
Number = "111-111-1111"
output="{\r\n      \"Code\":\"{0}\",\r\n    \"PhNumber\": \"{1}\"\r\n}".format(Code, Number)

print(output)

Keep getting this error.

Traceback (most recent call last): File "./prog.py", line 3, in KeyError: '\r\n "Code"'

Are you trying to generate JSON? Why don't you just use `json.dumps`? — chepner, Jul 07 '22 at 17:25
E.g., `output = json.dumps({'Code': Code, 'PhNumber': Number}', indent=6)`. — chepner, Jul 07 '22 at 17:32
The problem isn't with the printing, it's with the assignment. — Charles Duffy, Jul 07 '22 at 17:43

score 2 · Answer 1 · answered Jul 07 '22 at 17:21

You need to wrap the entire string in an additional set of curly braces in order to prevent the outermost braces from being interpreted as a formatting-placeholder.

output = "{{\r\n      \"Code\":\"{0}\",\r\n    \"PhNumber\": \"{1}\"\r\n}}".format(Code, Number)

Using a format string with literal braces

1 Answers1