<qiyuangong>136_Single_Number_1.py
def singleNumber( nums):
    dic = {}
    for num in nums:
        try:
            dic[num] += 1
        except KeyError:
            dic[num] = 1
    for num in nums:
        if dic[num] == 1:
            return num
def sample_funcname ( var_0 ) :
    var_1 = { }
    for var_2 in var_0 :
        try :
            var_1 [ var_2 ] += 1
        except KeyError :
            var_1 [ var_2 ] = 1
    for var_2 in var_0 :
        if var_1 [ var_2 ] == 1 :
            return var_2
