python - 为什么我在 for 循环中收到无效语法错误？

Question

我正在编写一个 python 程序来显示字典的元素，但是当我运行该程序时，我收到了无效语法错误。我在 for 循环的第三行到最后一行收到错误。有谁知道为什么会出现这个错误？

def main():
    my_contacts = {"Fred":7239591, "Mary":3841212, "Bob":3841212, \
               "Sarch":2213278}
    if 'Fred' in my_contacts:
        print('Number for Fred', my_contacts["Fred"])
    else:
        print("Fred is not in my_contacts list.")
    nameList = findName(my_contacts, 3841212)
    print("Names for 3841212:", end = " ")
    for name in nameList:
        print(name, end=" ")
    print()
    printAll(my_contacts)

def findName(contacts, number):
    nameList = []
    for name in contacts:
        if contacts[name]==number:
            nameList.append(name)
    return nameList

def printAll(contacts):
    print("All names and numbers")
    for key in sorted contacts:
        print(key.contacts[key])
main()

Answer 1

您的语法不正确。更改您的 printAll 函数，如下所示 -

def printAll(contacts):
    print("All names and numbers")
    for key in sorted(contacts):
        print(key, contacts[key])