File is not being created with 'w' argument

[paul18fr]

With the text file, I would have test something like :

import datetime
 
 
now = datetime.datetime.now()
readFileName = now.strftime("%d-%m-%y.txt")

dirName = "dataLogging"

readFileFullPath = ('E:/' + dirName + '/' + readFileName)

writeFileName = 'parsed_' + readFileName
writeFileFullPath = ('C:/' + 'parsed_' + dirName + '/' + writeFileName)


with open(readFileFullPath, 'r') as readFile, open(writeFileFullPath, 'w') as writeFile:

    lines = readFile.readlines()
    errorCount = 0
    
    for line in lines:
        line = line.strip()
        if line.find("ERROR") != -1:  
        # if "ERROR" in line.upper():   # another way
            errorCount +=1
        else:
            writeFile.write(line)
     
    writeFile.write(f"Errors:{errorCount}")