def f(string, start=0, acc=[]):
- if start >= len(string):
- return acc
- if '[' == string[start]:
- return [1] + f(string, start+1, acc)
- if ']' == string[start]:
- return [0] + f(string, start+1, acc)
- if ' ' == string[start]:
- return f(string, start+1, acc)
+ if start >= len(string): return acc
+ if '[' == string[start]: return [1] + f(string, start+1, acc)
+ if ']' == string[start]: return [0] + f(string, start+1, acc)
+ if ' ' == string[start]: return f(string, start+1, acc)
symbol, n = bar(string, start, start)
return [symbol] + f(string, n, acc)