Question

print "Which category would you like to view? Savory, Dessert, Cake, Soup or Drink?    "
category = raw_input()
if category == "Savory": #opens directory according to their answer.
    os.listdir("savory")

elif category == "Drink":
    os.listdir("drink")

elif category == "Cake":
    os.listdir("cake")

elif category == "Dessert":
    os.listdir("dessert")

elif category == "savory":
    os.listdir("savory")

elif category == "drink":
    os.listdir("drink")

elif category == "cake":
    os.listdir("cake")

elif category == "dessert":
    os.listdir("dessert")

我正在尝试创建一个代码，用于显示已保存在某些目录下的食谱。当我运行代码时，即使我将配方输入目录，也不显示任何内容。

Answer 1

首先，您不打印任何内容。 E.g

os.listdir("savory")

应该是

print(os.listdir("savory"))

其次，您可以大大缩短代码：

print("Which category would you like to view? Savory, Dessert, Cake, Soup or Drink?")
print(os.listdir(raw_input().lower()))

如果您想限制用户访问其他目录：

safe = ['savory', 'dessert', 'cake', 'soup', 'drink']

category = raw_input().lower()
if category in safe:
    print(os.listdir(category))
else:
    print('You have typed an invalid category')

使Python显示目录中的.txt文件

1 个答案: