How to convert "12.3+13.5" to float in python?

Answer 1

print(f"float= {12.3+13.5})
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Answer 2

The exec function can execute a string as though it is Python code.
exec("x=" + "12.3+13.5")
print(x)

The numbers in the string can be separated out and then converted from string into float.
x, y = "12.3+13.5".split('+', 1)
print(float(x) + float(y))

Answer 3

Please always tag the language you're asking about.
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