string formatting

← 🏠

Printing strings with variable values, i.e string formatting (PEP-3101), has become incredibly easy in Python 3. Simply precede a string with f.

1a = 123
2s = f'value of a: {a}'
3print(s)

Output:

1value of a: 123

1for i in range(10):
2  print(f"{10**i:>20}")

Output:

 1                   1
 2                  10
 3                 100
 4                1000
 5               10000
 6              100000
 7             1000000
 8            10000000
 9           100000000
10          1000000000