appending to the same csv file - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: General Coding Help (https://python-forum.io/forum-8.html) +--- Thread: appending to the same csv file (/thread-19800.html) |
appending to the same csv file - dervast - Jul-15-2019 Hi all, inside of one of my for loops I am keeping four parameters that I want to store into four columns of a csv file # part of an omitted for loop print('to be saved to the csv, id:',id,' recordNumber: ',recordNumber, 'start_time :',start_time, 'end_time :', end_time ) print('appending to file ', savepath)during run time what one sees in console is: to be saved to the csv, id : [3.474377447e+09] recordNumber: 9975 start_time : 1547445492512.0 end_time : 1547445552407.0 appending to file 69_58_68_93_31_0.csvHow I can append those values to a csv file within the for loop. The filename of course is always the same and only the new calculated four variables need to be added/appended. Regards Alex RE: appending to the same csv file - jefsummers - Jul-15-2019 If you open the file with the mode of "a" it will append to the end of the file. See: File Input and Output for Python 3.7.4 RE: appending to the same csv file - dervast - Jul-16-2019 thanks! I will use that. Anything special for writing a csv file or I just setup the extension when setting the file name. Thanks again Alex RE: appending to the same csv file - jefsummers - Jul-16-2019 Nothing special. Basically a csv file is a text file with data fields separated by commas and records separated by end of line. |