你可以使用str.split方法。

>>> my_string = 'A,B,C,D,E'
>>> my_list = my_string.split(",")
>>> print my_list
['A', 'B', 'C', 'D', 'E']

如果你想把它转换成元组，只要

>>> print tuple(my_list)
('A', 'B', 'C', 'D', 'E')

如果你想追加到一个列表，试试这个:

>>> my_list.append('F')
>>> print my_list
['A', 'B', 'C', 'D', 'E', 'F']

>>> some_string='A,B,C,D,E'
>>> new_tuple= tuple(some_string.split(','))
>>> new_tuple
('A', 'B', 'C', 'D', 'E')

对于字符串中包含的整数，如果你想避免将它们单独转换为int类型，你可以这样做:

mList = [int(e) if e.isdigit() else e for e in mStr.split(',')]

它被称为列表理解，它基于集合构建符。

ex:

>>> mStr = "1,A,B,3,4"
>>> mList = [int(e) if e.isdigit() else e for e in mStr.split(',')]
>>> mList
>>> [1,'A','B',3,4]

您可以使用此函数将逗号分隔的单个字符串转换为list-

def stringtolist(x):
    mylist=[]
    for i in range(0,len(x),2):
        mylist.append(x[i])
    return mylist

#splits string according to delimeters 
'''
Let's make a function that can split a string
into list according the given delimeters. 
example data: cat;dog:greff,snake/
example delimeters: ,;- /|:
'''
def string_to_splitted_array(data,delimeters):
    #result list
    res = []
    # we will add chars into sub_str until
    # reach a delimeter
    sub_str = ''
    for c in data: #iterate over data char by char
        # if we reached a delimeter, we store the result 
        if c in delimeters: 
            # avoid empty strings
            if len(sub_str)>0:
                # looks like a valid string.
                res.append(sub_str)
                # reset sub_str to start over
                sub_str = ''
        else:
            # c is not a deilmeter. then it is 
            # part of the string.
            sub_str += c
    # there may not be delimeter at end of data. 
    # if sub_str is not empty, we should att it to list. 
    if len(sub_str)>0:
        res.append(sub_str)
    # result is in res 
    return res

# test the function. 
delimeters = ',;- /|:'
# read the csv data from console. 
csv_string = input('csv string:')
#lets check if working. 
splitted_array = string_to_splitted_array(csv_string,delimeters)
print(splitted_array)

为了处理空字符串的情况，考虑以下问题:

>>> my_string = 'A,B,C,D,E'
>>> my_string.split(",") if my_string else []
['A', 'B', 'C', 'D', 'E']
>>> my_string = ""
>>> my_string.split(",") if my_string else []
[]

你可以拆分这个字符串，然后直接得到一个列表:

mStr = 'A,B,C,D,E'
list1 = mStr.split(',')
print(list1)

输出:

[' a '， ' b '， ' c '， ' d '， ' e ']

你也可以把它转换成n元组:

print(tuple(list1))

输出:

(' a '， ' b '， ' c '， ' d '， ' e ')