代码
def findall(c, s):
begin = 0
res = []
while True:
sub = s[begin:]
pos = sub.find(c)
if pos >= 0:
res.append(pos)
begin += pos + 1
else:
break
return res
s = 'asdasdasd'
print(findall('a', s))def findall(c, s):
begin = 0
res = []
while True:
sub = s[begin:]
pos = sub.find(c)
if pos >= 0:
res.append(pos)
begin += pos + 1
else:
break
return res
s = 'asdasdasd'
print(findall('a', s))
