for key in my_dict: print(key) # 遍历字典的键值对 for key, value in my_dict.items(): print(f"Key: {key}, Value: {value}") # 使用字典推导式创建一个新的字典 new_dict = {k: v.upper() for k, v in my_dict.items()} print(new_dict) # 输出: {'name': 'ALICE', 'age': ...
# 创建一个示例字典my_dict={'name':'Alice','age':30,'gender':'female','city':'New York','email':'alice@example.com'}# 打印字典的前3行count=0forkey,valueinmy_dict.items():ifcount<3:print(f'{key}:{value}')count+=1else:break 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. ...
result=[]forkey,valueindictionary.items():result.append((key,value))foriteminresult:print(item[0],item[1]) 1. 2. 3. 4. 5. 6. 5. 示例运行 让我们通过一个示例来运行上述代码,以便更好地理解纵向打印字典的过程。 dictionary={'name':'John','age':25,'city':'New York'}result=[]forkey...
forkey, valueindictionary.items():print("{} \t {} \t {} \t {} \t Total: {}".format(...)) The last thing left to do is to fill in the blanks. You know that thekeys in yourdict()are the flavors, so the first parameter toformat()would be thekeyvariable: .for...
def to_dictionary(keys,values):returndict(zip(keys,values))keys= ["a","b","c"]values= [2,3,4]print(to_dictionary(keys,values))#{'a': 2, 'c': 4, 'b': 3} 21、使用枚举 我们常用 For 循环来遍历某个列表,同样我们也能枚举列表的索引与值。
I would like to print a specific Python dictionary key: mydic = { "key_name": "value" } Now I can check if mydic.has_key('key_name'), but what I would like to do is print the name of the key 'key_name'. Of course I could use mydic.items(), but I don't want all ...
enumerate是Python的内置函数,用于将一个可遍历的数据对象(如列表、元组或字符串)组合为一个索引序列,同时列出数据和数据下标。 names = ['Alice', 'Bob', 'Charlie'] for index, name in enumerate(names, start=1): print(index, name) 4. 字典推导式(Dictionary Comprehensions) ...
Python example to print the key value of a dictionary. stocks = {'IBM':146.48,'MSFT':44.11,'CSCO':25.54}print(stocks)fork, vinstocks.items():print(k, v)forkinstocks:print(k, stocks[k]) Output {'IBM': 146.48,'MSFT': 44.11,'CSCO': 25.54} ...
Here, we are going to learnhow to print sum of key-value pairs in dictionary in Python? Submitted byShivang Yadav, on March 25, 2021 Adictionarycontains the pair of the keys & values (representskey : value), a dictionary is created by providing the elements within the curly braces ({}...
ifTrue:print("Hello Python If") if2 > 1:print("2 is greater than 1") 2比1大,因此就执行“print”代码。 如果“if”语句为假就会执行“else”语句。 if1 > 2: print("1 is greater than 2") else: print("1 is not greater than 2") ...