Question

有人可以告诉我为什么即使定义了'lname'也会出现此错误。错误消息最后。

in k = ['Antony'，'Mark'，'Mdel']。名是“ Anthony”，名是“ Mark Mdel”。我知道姓氏，以“ Mar”开头的项目（此处为“ Mark”）开头。因此需要找到以“ Mar”开头的项目，然后提取该项目以及之后的所有项目。但是我得到了错误。

k = ['Antony', 'Mark', 'Mdel']

for word in k:
    if word.startswith('Mar'):
        fidx = k.index(word)
        lname_i = k[fidx:]
        lname = []
        for nm in lname_i:
            lname.append(nm)
        print(lname)

    fname = [x for x in k if x not in lname]
    email = fname[0] + '.' + lname[0] + '@' + 'gmail.com'

    fn = ' '.join(fname)
    print(fn)

    ln = ' '.join(lname)
    print(ln)

C:\Users\Path\python.exe C:/Users/Path/Trail.py
Traceback (most recent call last):
  File "C:/Users/Path/Trail.py", line 26, in <module>
    fname = [x for x in k if x not in lname]
  File "C:/Users/Path/Trail.py", line 26, in <listcomp>
    fname = [x for x in k if x not in lname]
NameError: name 'lname' is not defined

Answer 1

lname is being defined within the if-statement. However, since 'Antony' doesn't start with 'Mar', the code within the if-statement isn't executed. Thus, lname is not defined.

NameError：名称“ lname”未定义

1 个答案: