python - 使用python在字符串中插入字符

Question

这是我想要实现的目标:我想替换

void some_function(int,  int *, float);

与

void some_function(int a, int *b, float c);

到目前为止，我在循环字符串时尝试用 chr(97+i) 替换“,”。

text = len("void some_function(int,  int *, float);")
i = 0
for j in range(0, length)
    if text[j] == ",":
       rep = " " + chr(97+i) + " .,"
       text = text.replace("," rep)
       i = i + 1
       j = 0 # resetting the index, but this time I want to find the next occurrence of "," which I am not sure

但这并不能完成任务。如果有更好的方法，请告诉我。

Answer 1

import re

i = 96
def replace(matches):
    global i
    i += 1
    return " " + chr(i) + matches.group(0)

re.sub(',|\)', replace, "void some_function(int,  int *, float);")