Python String Formatting

1 –

'Hello, {}'.format(name)

Output

'Hello, Bob'

2 –

'Hey {name}, there is a 0x{errno:x} error!'.format(name=name, errno=errno)

Output

'Hey Bob, there is a 0xbadc0ffee error!'

3 –

f'Hello, {name}!'

Output

'Hello, Bob!'

References
https://realpython.com/python-string-formatting/