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    <p>I think that a better option than "marking" the CSV file is to keep a file were you store the number of the last line you processed.</p> <p>So if the file does not exist (the one were you store the number of the last processed line), you process the whole CSV file. If this file exists you only process records after this line.</p> <p>Final Code On Working System:</p> <pre><code>#!/usr/bin/python import csv import MySQLdb import os mydb = MySQLdb.connect(host='localhost', user='root', passwd='*******', db='kestrel_keep') cursor = mydb.cursor() csv_data = csv.reader(file('data_csv.log')) start_row = 0 def getSize(fileobject): fileobject.seek(0,2) # move the cursor to the end of the file size = fileobject.tell() return size file = open('data_csv.log', 'rb') curr_file_size = getSize(file) # Get the last file Size if os.path.exists("file_size"): with open("file_size") as f: saved_file_size = int(f.read()) # Get the last processed line if os.path.exists("lastline"): with open("lastline") as f: start_row = int(f.read()) if curr_file_size &lt; saved_file_size: start_row = 0 cur_row = 0 for row in csv_data: if cur_row &gt;= start_row: cursor.execute('INSERT INTO `heating` VALUES ( %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s ,%s)', row) # Other processing if necessary cur_row += 1 mydb.commit() cursor.close() # Store the last processed line with open("lastline", 'w') as f: start_line = f.write(str(cur_row + 1)) # you want to start at the **next** line # next time # Store Current File Size To Find File Flush with open("file_size", 'w') as f: start_line = f.write(str(curr_file_size)) # not necessary but good for debug print (str(cur_row)) print "Done" </code></pre> <p><strong>Edit:</strong> Final Code Submited by ZeroG and now working on the system!! Thank You also Too Xion345 For Helping</p>
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    1. COI like this answer but I cant get the Row No we are putting into lastline file above 0 even '(str(cur_row))' reviles 0... also bear in mind when the file is flushed at 00:01:00 the line no will not be relative to the new csv file so I suppose we need to check the time somewhere
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    2. COYes, you are right the code is wrong, you need to move the `cur_row += 1` statement at the end of the for loop. As regards the flush at 00:01, you need to check the current time and the write date of the lastline file.
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    3. CO@ZeroG : A better idea to detect if the file has been flushed, is to store the size of the CSV file in the lastline file (in addition to the last processed line). If the file size has decreased between two subsequent executions of your script, you know that the CSV file has been flushed.
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