目前我使用这个代码来读取一个完整的csv文件到我的代码:阅读多个CSV文件与python标题与numpy?
data = np.loadtxt('csv_Complete.csv', delimiter=',', skiprows=1)
不过,现在我是在这种格式多个CSV文件。
Log1.csv
x1,x2,x3,x4....
1.5,3,5,7,8
2,5,1.2,5,2
1,3,3,5.5,6
log2.csv
x1,x2,x3,x4....
1,3.3,5,7,8
2,5.1,1,5.5,2
1,3,3,5,6
这是我想这样做的方法,但它不能正常工作。获得一个 ValueError异常:无法将字符串转换为float:
log1 = np.loadtxt('log1.csv', delimiter=',', skiprows=1)
log2 = np.loadtxt('log2.csv', delimiter=',', skiprows=1)
log3 = np.loadtxt('log3.csv', delimiter=',', skiprows=1)
data = np.append([log1, log2, log3])
我得到的错误是:
File "<ipython-input-6-6155c8de61ad>", line 1, in <module>
runfile('C:/Users/Mmyname/.spyder2-py3/setdataexp.py', wdir='C:/Users/myname/.spyder2-py3')
File "C:\Anaconda3\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 714, in runfile
execfile(filename, namespace)
File "C:\Anaconda3\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 89, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)
File "C:/Users/myname/.spyder2-py3/setdataexp.py", line 5, in <module>
log1 = np.loadtxt('log40a.csv', delimiter=',', skiprows=1)
File "C:\Anaconda3\lib\site-packages\numpy\lib\npyio.py", line 930, in loadtxt
items = [conv(val) for (conv, val) in zip(converters, vals)]
File "C:\Anaconda3\lib\site-packages\numpy\lib\npyio.py", line 930, in <listcomp>
items = [conv(val) for (conv, val) in zip(converters, vals)]
File "C:\Anaconda3\lib\site-packages\numpy\lib\npyio.py", line 659, in floatconv
return float(x)
ValueError: could not convert string to float:
您的两个示例文件都可以正常加载。你确定所有三个输入文件只有一行标题,其余的都是正确的csv直到结束?我对此表示怀疑。此外,请检查错误来自哪里:它应该是'loadtxt'调用之一,告诉你哪个文件有问题。 –
@AndrasDeak我编辑了错误的问题。 –
这可能是您的文件末尾有空行的问题......只是一个猜测。 – kpie