题解 | #遍历字典#

# 创建字典operators_dict
operators_dict = {'<': 'less than', '==': 'equal'}

# 使用print()语句一行打印字符串'Here is the original dict:'
print('Here is the original dict:')

# 使用for循环遍历 已使用sorted()函数按升序进行临时排序的包含字典operators_dict的所有键的列表
for key in sorted(operators_dict,reverse=False):
    print(f'Operator {key} means {operators_dict.get(key)}.')

# 对字典operators_dict增加键-值对'>': 'greater than'
operators_dict['>'] = 'greater than'
print('')
print('The dict was changed to:')

#使用for循环遍历 已使用sorted()函数按升序进行临时排序的包含字典operators_dict的所有键的列表
for key in sorted(operators_dict,reverse=False):
    print(f'Operator {key} means {operators_dict[key]}.')