如何使用for循环正确打印Python字典的键值对？

你的代码问题在于循环遍历的是prices列表，每次循环都打印整个字典，导致重复输出完整字典。要实现逐个输出键值对的效果，需要遍历字典的键值对。

基础修正代码 #

# 创建列表
products = ['Hammers', 'Shovels', 'Picks', 'Buckets', 'Rope']
prices = ['$11.50', '$25.00', '$13.45', '$2.95', '$9.99']
# 创建字典
products_prices = dict(zip(products, prices))

# 遍历字典的键值对
for product, price in products_prices.items():
    print(f"{product}: {price}")

输出结果 #

Hammers: $11.50
Shovels: $25.00
Picks: $13.45
Buckets: $2.95
Rope: $9.99

若需去掉价格的$符号 #

如果你期望输出中价格不带$（比如Shovels: 25.00），可以对价格做简单处理：

# 创建列表
products = ['Hammers', 'Shovels', 'Picks', 'Buckets', 'Rope']
prices = ['$11.50', '$25.00', '$13.45', '$2.95', '$9.99']
# 创建字典
products_prices = dict(zip(products, prices))

# 遍历并处理价格格式
for product, price in products_prices.items():
    clean_price = price.removeprefix('$')  # 也可以用 price.lstrip('$')
    print(f"{product}: {clean_price}")

输出结果 #

Hammers: 11.50
Shovels: 25.00
Picks: 13.45
Buckets: 2.95
Rope: 9.99

内容的提问来源于stack exchange，提问作者Haley