题解 | #遍历字典#

operators_dict={'<': 'less than','==': 'equal'}
print('Here is the original dict:')
okey=list(operators_dict.keys())
okey.sort()
for i in okey:
    print(f'Operator {i} means {operators_dict[i]}.')

operators_dict['>']='greater than'
print('\nThe dict was changed to:')
okey=list(operators_dict.keys())
okey.sort()
for x in okey:
    print(f'Operator {x} means {operators_dict[x]}.')