python else语法错误_为什么“else”行给出无效语法错误？

我犯了个错误：File "zzz.py", line 70

else:

^

SyntaxError: invalid syntax

导致问题的行在代码中用注释标记：def FileParse(self, table_file):

vars={}

tf = open(table_file, 'r')

for line in tf:

if line.startswith("#") or line.strip() == "": pass

elif line.startswith("n_states:"):

self.n_states = str(line[9:].strip())

elif line.startswith("neighborhood:"):

self.neighborhood = str(line[13:].strip())

elif line.startswith("symmetries:"):

self.symmetries = str(line[11:].strip())

elif line.startswith("var "):

line = line[4:]

ent = line.replace('=',' ').

replace('{',' ').

replace(',',' ').

replace(':',' ').

replace('}',' ').

replace('n','').split()

vars[ent[0]] = []

for e in ent[1:]:

if e in vars: vars[ent[0]] += vars[e]

else:

vars[ent[0].append(int(e))]

else:

rule = line.strip().split(",")

for k in vars.keys():

if k in rule:

for i in vars[k]:

change = rule.replace(k, i)

change = [int(x) for x in change]

w.rules.append(Rule(change[:5],change[5])

else: # line which causes the problem

rule = [int(x) for x in rule]

w.rules.append(Rule(rule[:5],rule[5]))

tf.close()

self.parse_status "OK"

return w.rules

w.rules是分配给“World”类的变量。

老实说，我不知道我为什么会得到这个。以前一切都很好，现在在其他缩进的块中添加一些额外的指令之后，这个错误就出现了。

有什么想法吗？