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遍历字典

[编程题]遍历字典

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算法知识视频讲解

创建一个依次包含键-值对'<': 'less than'和'==': 'equal'的字典operators_dict，

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

再使用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，使用print()语句一行输出类似字符串'Operator < means greater than.'的语句；

对字典operators_dict增加键-值对'>': 'less than'后，

输出一个换行，再使用print()语句一行打印字符串'The dict was changed to:'，

再次使用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，使用print()语句一行输出类似字符串'Operator < means greater than.'的语句，确认字典operators_dict确实新增了一对键-值对。

输入描述:

无

输出描述:

按题目描述进行输出即可（注意前后两个输出部分需以一个空行进行分隔）。

算法知识视频讲解

Python 3

佛系的鲸鱼在迎接offer

出题人会中文吗？这是人说出来的话吗？

发表于 2026-05-26 14:52:11 回复(0)

Python 3

有担当的做题家在努力存钱

#遍历字典

operators_dict = {'<': 'less than', '==': 'equal'}

print('Here is the original dict:')

# 遍历排序后的键并打印

for key in sorted(operators_dict.keys()):

print(f'Operator {key} means {operators_dict[key]}.')

# 添加新的键值对

operators_dict['>'] = 'greater than'

# 打印换行和提示信息

print()

print('The dict was changed to:')

# 再次遍历排序后的键并打印

for key in sorted(operators_dict.keys()):

print(f'Operator {key} means {operators_dict[key]}.')

发表于 2025-11-04 10:57:18 回复(0)

Python 3

牛牛177777

# 创建一个字典 operators_dict，包含两个键值对

# '<' 键对应的值是 'less than'，'==' 键对应的值是 'equal'

operators_dict = {'<': 'less than', '==': 'equal'}

# 打印提示信息，表明下面要输出原始字典的内容

print('Here is the original dict:')

# 使用 sorted(operators_dict.keys()) 对字典的键进行排序

for key in sorted(operators_dict.keys()):

# 输出格式为 "Operator <键> means <值>."

print(f'Operator {key} means {operators_dict[key]}.')

# 增加键 - 值对

operators_dict['>'] = 'greater than'

# 打印一个空行

print()

print('The dict was changed to:')

for key in sorted(operators_dict.keys()):

# 输出修改后字典的键值对信息

print(f'Operator {key} means {operators_dict[key]}.')

发表于 2025-02-17 11:11:10 回复(0)

Python 3

牛客341786656号

operators_dict = {"<":"less than","==":"equal"}
print("Here is the original dict:")
List = []
for i in operators_dict.keys():
List.append(i)
for a in sorted(List):
print("Operator {0} means {1}.".format(a,operators_dict[a]))

operators_dict[">"]="greater than"
print("\nThe dict was changed to:")
List1 = []
for i in operators_dict.keys():
List1.append(i)
for a in sorted(List1):
print("Operator {0} means {1}.".format(a,operators_dict[a]))

发表于 2022-11-17 17:13:25 回复(0)

Python 3

牛客823481772号

operators_dict = {'<': 'less than', '==': 'equal'}

print('Here is the original dict:')

# 使用sorted函数对字典进行排序时，sorted(operators_dict)--返回的数列只含有key,sorted(operators_dict.items())--返回的数列中，key和value以元组形式为一组

for key,value in sorted(operators_dict.items()):

print(f'Operator {key} means {value}.')

operators_dict['>'] = 'greater than'

print('\n'+'The dict was changed to:')

for key,value in sorted(operators_dict.items()):

print(f'Operator {key} means {value}.')

发表于 2022-11-10 16:57:57 回复(0)

Python 3

一颗宏心

operators_dict = {'<': 'less than','==': 'equal'}
print('Here is the original dict:')

for k,v in sorted(operators_dict.items()):
    print(f'Operator {k} means {operators_dict[k]}.')

operators_dict.update({'>': 'greater than'})   
print()
print('The dict was changed to:') 

for k,v in sorted(operators_dict.items()):
    print(f'Operator {k} means {operators_dict[k]}.')

发表于 2022-10-25 11:56:58 回复(0)

Python 3

牛客528186779号

突出一个，需求不清晰。讲不明白要干啥。建议重新出一遍题

d = {'<':'less than', '==':'equal'}

print('Here is the original dict:')

forx,y in sorted(d.items()):

print(f'Operator {x} means {y}.')

d.setdefault('>', 'greater than')

print()

print('The dict was changed to:')

forx,y in sorted(d.items()):

print(f'Operator {x} means {y}.')

# print('Operator < means less than.')

# d.setdefault('>', 'greater than')

# print(d)

# n = sorted(d)

# fori in n:

# print(i)

# print('The dict was changed to:')

发表于 2022-09-08 22:40:53 回复(0)

Python 3

心愿酒馆

operators_dict={'<': 'less than','==': 'equal'}
print('Here is the original dict:')
for key in sorted(operators_dict):
    print(f"Operator {key} means {operators_dict[key]}.")
operators_dict['>']='greater than'
print()
print('The dict was changed to:')
for key in sorted(operators_dict):
    print(f"Operator {key} means {operators_dict[key]}.")

发表于 2022-09-05 15:49:48 回复(0)

Python 3

会遇见花开

operators_dict = {'<':'less than','==':'equal'}
print('Here is the original dict:')
for key,value in operators_dict.items():
print(f'Operator {key} means {value}.')

print('\nThe dict was changed to:')
operators_dict['>'] = 'greater than'

for key,value in operators_dict.items():

print(f'Operator {key} means {value}.')

#没有用sorted

operators_dict={'<':'less than','==':'equal'}

print('Here is the original dict:')

for k,v in sorted(operators_dict.items()):

print(f'Operators {k} means {v}')

operators_dict['>']='greater than'

print()

print('The dict was changed to:')

for k,v in sorted(operators_dict.items()):

print(f'Operators {k} means {v}')

发表于 2022-09-02 19:37:21 回复(0)

Python 3

选钝角的小刺猬很纠结

operators_dict = {'<':'less than','==':'equal'}
print('Here is the original dict:')
for i in sorted(operators_dict):
    print(f'Operator {i} means {operators_dict[i]}.')
print()
operators_dict['>']=('greater than')
print('The dict was changed to:')
for i in sorted(operators_dict):
    print(f'Operator {i} means {operators_dict[i]}.')

发表于 2022-09-01 11:07:41 回复(0)

Python 3

牛客387383470号

operators_dict={'<': 'less than','==': 'equal'}
print('Here is the original dict:')
for i in sorted(operators_dict,reverse=False):
print('Operator {} means {}.'.format(i,operators_dict[i]))
operators_dict['>']='greater than'
print()
print('The dict was changed to:')
for i in sorted(operators_dict,reverse=False):
print('Operator {} means {}.'.format(i,operators_dict[i]))

发表于 2022-08-31 13:39:56 回复(0)

Python 3

深耕牛牛

operators_dict = {"<":"less than", "==":"equal"}

print("Here is the original dict")

for k,v in sorted(operators_dict.items()):

print(f"Operator {k} means {v}")

operators_dict['>'] = 'greater than'

print(' ')

print("The dict was changed to:")

for k,v in sorted(operators_dict.items()):

print(f'Operator {k} menas {v}')

发表于 2022-08-30 14:21:29 回复(0)

Python 3

Ricky_Li

operators_dict = {'<': 'less than','==': 'equal'}
print('Here is the original dict:')

for i in sorted(operators_dict,reverse=False):
print(f'Operator {i} means {operators_dict[i]}.')

operators_dict['>'] = 'greater than'
print('\n'+'The dict was changed to:')
for i in sorted(operators_dict,reverse=False):
print(f'Operator {i} means {operators_dict[i]}.')

发表于 2022-08-30 13:35:14 回复(0)

Python 3

Ailee__

dict={'<':'less than','==':'equal'}
print('Here is the original dict:')
for i in sorted(dict):
    print('Operator %s means %s.'%(i,dict[i]))
dict['>']='greater than'
print('\nThe dict was changed to:')
for i in sorted(dict):
    print('Operator %s means %s.'%(i,dict[i]))

发表于 2022-08-25 10:31:13 回复(0)

Python 3

牛客164568449号

d={'<':'less than','==':'equal'}
print('Here is the original dict:')
a=sorted(d.keys(),reverse=False)
for i in a:
print('Operator {0} means {1}.'.format(i,d[i]))
d['>']='greater than'
print()
print('The dict was changed to:')
b=sorted(d.keys(),reverse=False)
for i in b:
print('Operator {0} means {1}.'.format(i,d[i]))

发表于 2022-08-24 16:04:43 回复(0)

Python 3

lynn_z

operators_dict={'<': 'less than','==': 'equal'}
print('Here is the original dict:')
for key,value in sorted(operators_dict.items()):
    print(f'Operator {key} means {value}.')
operators_dict['>']='greater than'
print()
print('The dict was changed to:')
for key,value in sorted(operators_dict.items()):
    print(f'Operator {key} means {value}.')

发表于 2022-08-24 15:52:49 回复(0)

Python 3

Florakuaikuaikuai

operators_dict={'<':'less than','==':'equal'}
print('Here is the original dict:')
a=sorted(operators_dict)
for i in a:
    print(f'Operator {i} means {operators_dict[i]}.')
operators_dict['>']= 'greater than'
print()
print('The dict was changed to:')
for x in sorted(operators_dict):
     print(f'Operator {x} means {operators_dict[x]}.')

发表于 2022-08-24 15:50:57 回复(0)