In JavaScript I can use a template literal and include calculate values. For example:
var a = 3;
var b = 8;
var text = `Adding ${a} + ${b} = ${a+b}`; // Adding 3 + 8 = 11
I know python has f'…' strings and str.format() with placeholder. Is there a way I can include a calculation in the string?
Using f-string:
a = 3
b = 8
text = f'{a} + {b} = {a + b}'
The text variable in this case is a string containing '3 + 8 = 11'.
Using str.format:
a = 3
b = 8
text = '{0} {1} = {2}'.format(a, b, a + b)
str.format()?
'{a} + {b} = {a + b}'.format(**{'a': a, 'b': b, 'a + b': a + b}). but this is very much a bunch of repeated tokens. Just use f-strings.
str.format docs, it can be both *args or **kwargs, so using positional args is less verbose (for simplicity).format() method {…} is strictly a key, not an evaluated expression. On the other hand, in the f-string, it is evaluated.Using str.format:
a = 3
b = 8
text = '{0} + {1} = {2}'.format(a,b,a+b)
print(text)
Using f-string:
f'{a} + {b} = {a + b}'
All of them do the same thing as:
a,"+",b,"=",a+b
.format has been changed and differs from the intent of the OP's question (they should be provided as names). Please refer to this thread for what should be done instead (i.e. pass in a series of keywords).
f'{a} + {b} = {a + b}'will do - That is basically likea,"+",b,"=",a+b