Hướng dẫn csv append python
I am trying to add a new row to my old CSV file. Basically, it gets updated each time I run the Python script. Right now I am storing the old CSV rows values in a list and then deleting the CSV file and creating it again with the new list value. I wanted to know are there any better ways of doing this. Gino Mempin 20.8k24 gold badges84 silver badges111 bronze badges asked Mar 2, 2010 at 14:23
Opening a file with the davidism 113k24 gold badges367 silver badges323 bronze badges answered Mar 2, 2010 at 14:25 brettkellybrettkelly 27.1k8 gold badges53 silver badges70 bronze badges 2 I prefer this solution using the The key point is using
If you are using Python 2.7 you may experience superfluous new lines in Windows. You can
try to avoid them using answered Jun 6, 2016 at 9:46 G MG M 18.7k10 gold badges76 silver badges79 bronze badges 3 Based in
the answer of @G M and paying attention to the @John La Rooy's warning, I was able to append a new row opening the file in
I didn't try with the regular writer (without the Dict), but I think that it'll be ok too. answered Jun 21, 2018 at 16:47 NatachaNatacha 1,04716 silver badges20 bronze badges 0 Are you opening the file with mode of 'a' instead of 'w'? See Reading and Writing Files in the python docs
answered Mar 2, 2010 at 14:26 John La RooyJohn La Rooy 286k51 gold badges358 silver badges498 bronze badges 2 If the file exists and contains data, then it is
possible to generate the
answered Feb 6, 2019 at 11:52 Ron KalianRon Kalian 2,9742 gold badges14 silver badges22 bronze badges If you use pandas, you can append your dataframes to an existing CSV file this way:
With mode='a' we ensure that we append, rather than overwrite, and with header=False we ensure that we append only the values of df rows, rather than header + values. answered Oct 13, 2020 at 14:21 Anna GellerAnna Geller 1,1026 silver badges6 bronze badges I use the following approach to append a new line in a .csv file:
[NOTE]:
answered Jul 18, 2019 at 18:37 Benyamin JafariBenyamin Jafari 23.5k20 gold badges113 silver badges134 bronze badges 2
Georgy 10.8k7 gold badges62 silver badges68 bronze badges answered Mar 15, 2018 at 20:57 2 |