题解 | #遍历字典#

operators_dict = {'<': 'less than','==': 'equal'}
print('Here is the original dict:')
t = sorted(operators_dict,key=lambda x:x[0])
for k in t:
    print(f'Operator {k} means {operators_dict[k]}.')
operators_dict['>']='greater than'
print('')
print('The dict was changed to:')
t = sorted(operators_dict,key=lambda x:x[0])
for k in t:
    print(f'Operator {k} means {operators_dict[k]}.')