Formatted string literals (f-strings) let you include the value of Python expressions inside a string by prefixing the string with f or F and writing expressions as {expression}.
An optional format specifier can follow the expression. This allows greater control over how the value is formatted. The following example rounds pi to three places after the decimal:
>>> import math
>>> print(f'The value of pi is approximately {math.pi:.3f}.')
The value of pi is approximately 3.142.
沒有留言:
發佈留言