python pandas dataframe index，错误TypeError：输入必须是可迭代的，pandas版本可能是错误的

I'm working with the eda-explorer python library from MIT, which allows one to import physiological data files from particular wearable biosensors. This libraray uses pandas DataFrames to store the physiological timeseries. I've been using this libarary in different computing set-ups. When I try to use it in my ubuntu 15.10 environment I get an error message I don't understand. It is related to the following function which is instrumental in getting the data into a DataFrame and doing some intitial transformations:I'm working with the eda-explorer python librar