python - for 循环是否会清空 Python 中的列表？

Question

如何将列表中的项目作为第二和第三部分的输出？（每次我想打印它们时，他们只打印列表中某个项目的字母。）

foods = ["pizza", "burger", "popcorn", "cannoli", "noodles"]
print("The foods I like are:\n")
for foods in foods[:3]:
    print(foods.title())
#2nd
print("The foods my friend likes are:\n")
for foods in foods[1:4]:
    print(foods.title())
#3rd
print("The food SHE likes are:\n")
for foods in foods[:]:
    print(foods.title())

标签： pythonlistfor-loop

Answer 1

foods您在每次迭代中覆盖。请试试这个：

foods = ["pizza", "burger", "popcorn", "cannoli", "noodles"]
#2nd
print("The foods my friend likes are:\n")
for f in foods[1:4]:
    print(f.title())
#3rd
print("The food SHE likes are:\n")
for f in foods[:]:
    print(f.title())