初学者求助：怎么让程序正常运行（需要用到z）

list1=['a','b','c','d','e','f','g','h']

def detail(i):

    global z,l

    z=i,l=''

    for j in list1[z:]:

        if j!='g':

            l=l+j

        else:

            break

    return l

print(detail(1))

报错：

Traceback (most recent call last):
  File "c:/Users/lenovo/Desktop/函数试.py", line 12, in <module>
    print(detail(1))
  File "c:/Users/lenovo/Desktop/函数试.py", line 4, in detail
    z=i,l=''
ValueError: not enough values to unpack (expected 2, got 0)

一个标点符号的问题 : "," 改成 ";"  , Python中两个语句需要用 ";" 分隔开

list1=['a','b','c','d','e','f','g','h']

def detail(i):

    global z,l
    z,l=i,''

    for j in list1[z:]:

        if j!='g':

            l=l+j

        else:

            break

    return l

print(detail(1))

list1=['a','b','c','d','e','f','g','h']

def detail(i):
    global z,l
    z=i;l=''
    for j in list1[z:]:
        if j!='g':
            l=l+j
        else:
            break
    return l

print(detail(1))

用我这个代码