Python Pandas Tutorial (Part 5): Updating Rows and Columns - Modifying Data Within DataFrames

In this video, we will be learning how to update the values in our rows and columns.

In this Python Programming video, we will be learning how to modify the data within our DataFrames. We will use some of the filtering techniques we learned in the last video to update values conditionally, and we will also be learning how to use the apply, map, and applymap method. Let's get started...

The code for this video can be found at:

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[coreyms]

Hey everyone! I hope everyone finds this video helpful. I wanted to make this video shorter, but I really wanted to highlight all the different ways we can update our rows and cover the apply, map, and applymap methods in as much detail as I could. In the next video, we'll be learning how to add and remove rows/columns. It will be much shorter. I should have that video out next week. I hope you all have a great weekend!

[alexanderkozhukhov]

I can't believe I am watching this for free. I admire people like you, Corey Schafer. Thanks a lot!

[tanle]

At this time (beginning of 2023), your videos are still worth more than all paid courses I have studied on Udemy and Coursera (IBM courses included). Thank you for your work, it is much appreciated!

[fahadshoaib]

updating column names 1:50
updating data in row 6:20
updating data in multiple rows 15:40
apply() with series 17:51
apply() with data frames 22:33
applymap() (used only with df) 28:11
map() (used only with series) 30:00
replace() 31:32

[stressfreetrading]

Do press a like so that this comes first in the suggestion whenever anyone searches for Pandas. coz this is better than all other courses available.

[abhinav]

She: Let's do it tonight
Corey: Well, there's a couple of different ways that we could do this :-)
Btw, Thanks Corey for your effort. These tutorials are gold :)

[saiakhil]

I've never seen a more organized and compact way of teaching. Kudos Corey, you are the king.

[SandeepChaudhary-vxzy]

Great teacher is the one who known how to deliver content probably you are the one among many... thanks

[pawangulia]

Your videos are pure gold, Mr Corey. This is a gift of knowledge to people all over the world. Thank, you sir!

[balabunat]

I am not new in pandas, but anyway, this videos are worth watching because your explanation is just wonderful

[rauberhozenplotz]

Insane work! Nice flow of talking and explaining. You have got great talent in teaching.

[shivakumarpendem]

Brilliant is seared into my brain after watching Matplotlib series and Pandas Series XD.

[contrevaloir]

These are, hands down, the most well explained tutorial videos on pandas, and programming, that I've seen, in or out of university. This guy is an amazing teacher. Thank you!

[aegystierone]

I really appreciate how you explain it in detail Corey, I will support you in any way I can!

[daviskipchirchir]

This is the end of 2023 and I am glad I found your videos. Our century really literally has information at our fingertips. We are just warping through information. Throughout history, such well-curated educational content has never been so easily accessible to anyone.

[jerrywang]

Your tutorial is invaluable. There is no better place to learn pandas on Youtube. Please keep updating your channel.

[expat]

Every single video you do is perfect. Pacing, structure, content.. everything.

[patrickbarry]

These are the best Pandas tutorials on YouTube. It would be great to see a tutorial on vectorisation. Covering numpy functions, including np.where and np.select and explaining the time benefits. There are very few good resources for this.

[bharathbanala]

Hey Corey,
Could you please make a small video on lambda for better understanding of it.
Thanks.

[shaanshah]

The Tutorials are great and they are set at a perfect pace