The following code: <pre class="prettyprint"><code>a = 0 b = f'{"c": {a}}' </code></pre> throws the error: <code>ValueError: Sign not allowed in string format specifier</code> How to fix it?

Escape the braces like this. <pre class="prettyprint"><code>>>> f'{{"c": {a}}}' '{"c": 0}' </code></pre>

Curly braces with f-strings - ValueError: Sign not allowed in string format specifier [duplicate]

The following code:

a = 0
b = f'{"c": {a}}'

throws the error: ValueError: Sign not allowed in string format specifier How to fix it?

663

asked Dec 24 '18 17:12

Escape the braces like this.

>>> f'{{"c": {a}}}'
'{"c": 0}'

answered Oct 02 '22 11:10

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