I am trying to create an IOT weather station where in a Python file it would receive data from a temperature sensor and save it in a CSV along with the second(s) it was received.

Since this is going to be plotted in a graph in real time, I can't have it save new data without clearing the CSV file out first since if I did, the line in the graph will overlap, because of the eventual repetition of seconds in the CSV file.

This is a sample of what is saved in the CSV file:

```none
Celcius,Time
56,20.50
57,20.50
58,20.50
59,20.50
00,20.50

```

I want the code to clear the CSV file once the seconds reach 60 (or 00), so it can be repopulated with new data.

This is what I have come up with so far:

```
with open('D:\\WORKSTUFF\\Coding\\ADET\\txt files\\testing.csv', 'a') as csv_file:
    csv_writer = csv.DictWriter(csv_file, fieldnames=fieldnames)
    info = {
        "Time": secondsNow[2],
        "Celcius": secondsNow[2]
    }
    if (secondsNow[2] == "00"):
        print("CLEAR CLEAR CLEAR")
        csv_file.close()
    else:
        csv_writer.writerow(info)

```