fork(5) download
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  1. import sys,re
  2. def v(s):
  3.  if s[:1]=='(':l,s=e(s[1:]);return l,s[1:]
  4.  m=re.match(r"\d+\.?\d*|\.\d+",s)
  5.  if m:return[m.group()],s[m.end():]
  6. def b(s,f,*O):
  7.  l,s=f(s)
  8.  while s[:1]in O:
  9.   o=s[0]
  10.   r,s=f(s[1:])
  11.   if len(r)>1:l,r=r,l
  12.   l+=[o]+r
  13.  return l,s
  14. m=lambda s:b(s,v,'*','/')
  15. e=a=lambda s:b(s,m,'+','-')
  16. print(' '.join(e(sys.argv[1])[0]))
Runtime error #stdin #stdout #stderr 0.04s 9984KB
comments (?)
stdin
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1+(5*7)*7
stdout
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Standard output is empty
stderr
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Traceback (most recent call last):
  File "./prog.py", line 16, in <module>
IndexError: list index out of range
https://ideone.com/reGi9b
language:
Python 3 (python  3.9.5)
created:
8 years ago
visibility:
public

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