How to check if any value is NaN in a Pandas DataFrame

0 votes
In Python Pandas, what's the best way to check whether a DataFrame has one (or more) NaN values?

I know about the function pd.isnan, but this returns a DataFrame of booleans for each element.
Jun 15, 2020 in Python by kartik
• 37,520 points
4,237 views

1 answer to this question.

0 votes

Hello @kartik,

If you need to know how many rows there are with "one or more NaNs":

df.isnull().T.any().T.sum()

Or if you need to pull out these rows and examine them:

nan_rows = df[df.isnull().T.any().T]

Hope this helps!

Thank You!!

answered Jun 15, 2020 by Niroj
• 82,880 points

Related Questions In Python

0 votes
1 answer

How to find if a value exists in Pandas dataframe?

Try this:​ for name in df['Name']: ...READ MORE

answered Apr 8, 2019 in Python by Tina
12,563 views
0 votes
2 answers

How to check if a csv file is empty in pandas?

Try this: df = pd.DataFrame(columns=['Name', 'ID', 'Department']) if df.empty ...READ MORE

answered Jul 1, 2019 in Python by Bob
14,672 views
+1 vote
1 answer

How to check if a string is null in python

Try this: if cookie and not cookie.isspace(): # the ...READ MORE

answered Aug 20, 2018 in Python by Priyaj
• 58,100 points
23,035 views
0 votes
1 answer

How to check if a substring is present in a string using Python?

To check if the substring exists in ...READ MORE

answered May 9, 2019 in Python by Sharan
1,111 views
0 votes
1 answer

How to rename columns in pandas (Python)?

You can use the rename function in ...READ MORE

answered Apr 30, 2018 in Data Analytics by DeepCoder786
• 1,720 points

edited Jun 8, 2020 by MD 2,007 views
0 votes
1 answer

What is the Difference in Size and Count in pandas (python)?

The major difference is "size" includes NaN values, ...READ MORE

answered Apr 30, 2018 in Data Analytics by DeepCoder786
• 1,720 points

edited Jun 8, 2020 by Gitika 2,809 views
0 votes
2 answers

Replacing a row in pandas data.frame

key error. I love python READ MORE

answered Feb 18, 2019 in Data Analytics by anonymous
13,671 views
0 votes
1 answer

Converting a pandas data-frame to a dictionary

Emp_dict=Employee.to_dict('records') You can directly use the 'to_dict()' function ...READ MORE

answered May 23, 2018 in Data Analytics by Bharani
• 4,660 points
4,553 views
0 votes
1 answer

How to check if a value exists in pandas dataframe index?

Hello @kartik, Basically instead of raising exception I ...READ MORE

answered Jun 15, 2020 in Python by Niroj
• 82,880 points
6,751 views
0 votes
1 answer

How to check if a float value(decimal number) is between range(0 to 10) in python

Hello,  A function that returns True for an integer number (int or ...READ MORE

answered Sep 14, 2020 in Python by Niroj
• 82,880 points
7,083 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP