The [f'str'] for string formatting was recently introduced in python 3.6. link. I'm trying to compare the .format() and f'{expr} methods.
f ' <text> { <expression> <optional !s, !r, or !a> <optional : format specifier> } <text> ... '
Below is a list comprehension that converts Fahrenheit to Celsius.
Using the .format() method it prints the results as float to two decimal points and adds the string Celsius:
Fahrenheit = [32, 60, 102]
F_to_C = ['{:.2f} Celsius'.format((x - 32) * (5/9)) for x in Fahrenheit]
print(F_to_C)
# output ['0.00 Celsius', '15.56 Celsius', '38.89 Celsius']
I'm trying to replicate the above using the f'{expr} method:
print(f'{[((x - 32) * (5/9)) for x in Fahrenheit]}') # This prints the float numbers without formatting
# output: [0.0, 15.555555555555557, 38.88888888888889]
# need instead: ['0.00 Celsius', '15.56 Celsius', '38.89 Celsius']
Formatting the float in f'str' can be achieved:
n = 10
print(f'{n:.2f} Celsius') # prints 10.00 Celsius
Trying to implement that into the list comprehension:
print(f'{[((x - 32) * (5/9)) for x in Fahrenheit]:.2f}') # This will produce a TypeError: unsupported format string passed to list.__format__
Is it possible to achieve the same output as was done above using the .format() method using f'str'?
Thank you.
