exception_7.py

from pandas.io.parsers import ParserError

# create a list to store the dataframes 
dataframe_list = []

# iterate through the folders 1 to 34
for folder in range(1, 35):
    
    # create two boolean variables for both kind of exceptions.
    parse_error = False
    file_not_found = False
    
    ### notice that for folder i, we have file name "region_i"
    ### create the file name
    try :
        file_name = 'region_' + str(folder) + '.csv'
        data = pd.read_csv('dataset/'+ str(folder) +'/' +file_name)
          
    # if the error is ParserError, print file has incorrect format and set parse_error = True
    except ParserError:
        parse_error = True
        data = pd.read_csv('dataset/'+ str(folder) +'/' +file_name,  skiprows=4)
        dataframe_list.append(data)
        print(file_name, 'has incorrect format.')
    
    # if the error is FileNotFoundError, print file is missing and set file_not_found = True
    except FileNotFoundError:
        file_not_found = True
        print(file_name, 'is missing')
    
    # if no exception occurs, append the dataframe to the list.
    else:
                
        dataframe_list.append(data)