Exception raised if /buffer_files/ doesn't exist.

[vstadnytskyi]

Exception raised if /buffer_files/ doesn't exist. The log file does exist. The error needs to be handled and at least log file history should be processed.

the code

from icarus_nmr.analysis import Dataset 
datasets = {}
for tube in list(foldername_list.keys()):
    for foldername in foldername_list[tube]:
        a = Dataset(folder = root_data + foldername)
        datasets[tube].append(a)

and the exception is

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-18-7ce0b105d88e> in <module>
      2 for tube in list(foldername_list.keys()):
      3     for foldername in foldername_list[tube]:
----> 4         a = Dataset(folder = root_data + foldername)
      5 
      6         datasets[tube].append(a)

~/All-Projects-on-femto/NMR-Pressure-Jump/icarus-nmr/icarus_nmr/analysis.py in __init__(self, folder)
     47         self.i = 0
     48         if folder is not None:
---> 49             self.init()
     50 
     51     def init(self):

~/All-Projects-on-femto/NMR-Pressure-Jump/icarus-nmr/icarus_nmr/analysis.py in init(self)
     60             #get the list of all trace types and put in appropriate dictionary entry
     61             for key in self.trace_lists.keys():
---> 62                 self.trace_lists[key] = self.get_lst(self.folder, key)
     63                 self.trace_length[key] = len(self.trace_lists[key])
     64             #get log_header

~/All-Projects-on-femto/NMR-Pressure-Jump/icarus-nmr/icarus_nmr/analysis.py in get_lst(self, folder, type)
    188         from numpy import genfromtxt
    189         import os
--> 190         dir_lst = os.listdir(folder + "buffer_files/")
    191         temp_lst = []
    192         for item in dir_lst:

FileNotFoundError: [Errno 2] No such file or directory: '/net/femto-data/C/Pressure-Jump-NMR/icarus-ii-50/2019-09-30-10-52-36/buffer_files/'