Convert txt file to Excel file via batch script

import xlsxwriter, glob, configparser, shutil, os

# Function to check if a string is a float number
# Return original input if not a float
def check_if_float(stringIn):
    try:
        return float(stringIn)
    except ValueError:
        return stringIn

# set work and archive directories from config.ini file
configFile = configparser.ConfigParser()
configFile.read('config.ini')
workDir = configFile['GC Data']['workDir']
archiveDir = configFile['GC Data']['archiveDir']

# Create archive folder if it doesn't exist
if not os.path.exists(archiveDir):
   os.mkdir(archiveDir)

# limit processing to 20 files at a time to control memory usage and process time.
fileList = glob.glob(workDir + '\\*.txt')[:21]

for fileIn in fileList:
    #Notify user which file is processing:
    print('Processing file: '+ fileIn)

    with open(fileIn, 'r') as file:
        # split by newlines and trim whitespace
         dataIn = [[i.strip() for i in row.split('  ') if i] for row in file.read().split('\n')]
        
    # Start up an Excel workbook and as a worksheet     
    workbook = xlsxwriter.Workbook(fileIn.replace('.txt', '.xlsx'))
    worksheet = workbook.add_worksheet()

        # Set pointer for which row to write to. 
    rowIndex = 0
    # enumerate() returns the row and a number that we can use to filter certain lines 
    for row in enumerate(dataIn):
        data = row[1]
        if len(row[1]) > 0:
                    # Example: this row has the second set of headers shifted one column
                    # because of how we are dealing with whitespace. So, we'll insert
                    # a point in to make up for it.
                    if row[0] == 9:
                        data.insert(0,'')
                    # Check if row is full of dashes, if not, then process the row
                    if row[1][0][:3] != '---':
                        colData = enumerate(row[1])
                        for col in colData:
                            # Check if data is a float, otherwise use a string
                            # Write it to the worksheet.
                            worksheet.write(rowIndex, col[0], check_if_float(col[1]))
                        rowIndex += 1

    workbook.close()
    shutil.move(fileIn, fileIn.replace(workDir, archiveDir))