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数据错误检查数据错误:是否有办法避免使用字典来检查列表
原标题:For data error checking: Is there a way to avoid using a dictionary for a list

我有这样的数据:

Observation 1  
Type : 1  
Color: 2  

Observation 2  
Color: 2  

Resolution: 3

最初我所做的是 试图建立一个CSV 看起来像:

1,2  
2,3  # Only problem here is that the data should look like this 1,2,
 ,2,3 #  

我做了以下手术:

while linecache.getline(filename, curline):  
    for i in range(2):    
        data_manipulated = linecache.getline(filename, curline).rstrip()    
        datamanipulated2 = data_manipulated.split(":")  
        datamanipulated2.pop(0)  
        lines.append( : .join(datamanipulated2))  

这是一个相当庞大的数据集,我试图找到方法来核实上述问题没有发生,以便我能够适当地和通过检查来汇编数据。 然而,我碰到了字典,表现对我来说是一个大问题,如果可能的话,我更希望列出清单(至少我的理解是字典可以大大放慢速度? ) 。 我只是在想是否有人建议最迅速和最有力的方法这样做?

问题回答

怎么样的东西,比如:

input_file = open( /path/to/input.file )
results = []
for row in file:
    m = re.match( Observation (d+) , row)
    if m:
        observation = m.group(1)
        continue
    m = re.match( Color: (d+) , row)
    if m:
        results.append((observation, m.group(1),))
        print "{0},{1}".format(*results[-1])

您可以使用预编译的正则表达式加速 。





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