bidict_quickstart_forward_inverse_lookup_examples.py

1from bidict import bidict
2
3# Create a bidict
4element_by_symbol = bidict({'H': 'hydrogen'})
5
6# Forward lookup
7assert element_by_symbol['H'] == 'hydrogen'
8
9# Inverse lookup via the .inverse property
10assert element_by_symbol.inverse['hydrogen'] == 'H'
11
12# bidicts stay in sync
13element_by_symbol['He'] = 'helium'
14assert element_by_symbol.inverse['helium'] == 'He'
15
16# Inverse lookup can also be done using the .inv property for brevity
17assert element_by_symbol.inv['helium'] == 'He'