comefrom: <qiyuangong>191_Number_of_1_Bits_1.py
code: def hammingWeight( n):
      s_n = bin(n)[2:]
      return s_n.count('1')
masked: def sample_funcname ( var_0 ) :
      var_3 = bin ( var_0 ) [ 2 : ]
      return var_3.count ( '1' )
  