从index [0]到随机索引，对字符串列表进行切片

Question

I am trying to slice a list of strings from index[0] till a random index. The index number where the slicing needs to end, is always at the index number that holds a "(". The code i'm trying is as follow

new_name = [[:x:] if x == "(" else x for x in new_name]

I always get invalid syntax error. How can i make this work?

thx in advance

Answer 1

The x variable in the for expression is assigned to each character in new_name for each iteration, not the index of each character.

For your purpose you should simply use the str.find() method to get the index of a given character in a string:

new_name = new_name[:new_name.find('(')]

Answer 2

List Comprehension method:

l = list('sandeep(Kadapa)')

[i for i in iter(lambda x=iter(l): next(x),'(')]

['s', 'a', 'n', 'd', 'e', 'e', 'p']