/Python/How to check if a value is nan in python

How to check if a value is nan in python

Python test is nan

math.isnan(n)

Source: docs.python.org

Check if a value in dataframe is nan

#return a subset of the dataframe where the column name value == NaN 
df.loc[df['column name'].isnull() == True]

Python check if nan

import math
x = float('nan')
math.isnan(x)
True

Source: stackoverflow.com

Check if something is nan python

import math
print math.isnan(float('NaN'))OutputTrue
print math.isnan(1.0)OutputFalse

Source: kite.com

Check is string is nan python

>>> pd.isnull(None)
True

Source: stackoverflow.com

How to check if a value is nan in python

# If you are doing any conditional operation and you want to check a if
# a single value is Null or not then you can use numpy's isna method.
np.isna(df[col][0])

-1

Similar codes

3 votes117 views2 answers
How to install terminal in atom
Python
1 vote133 views1 answer
User group template tag django
Python Django
0 vote97 views1 answer
Pandas crosstab function(counting) frequencies
Python
27 votes106 views2 answers
Auto-py-to-exe with python3
Python
5 votes149 views2 answers
Delete index in df
Python
0 vote132 views1 answer
From flask_paginate import get_page_parameter
Python Flask
4 votes98 views1 answer
Pandas replace empty strings with NaN
Python
1 vote99 views2 answers
Datetime date of 10 years ago python
Python
1 vote134 views1 answer
How to use query_params in get_object djangorestframework
Python Django
0 vote101 views1 answer
Multiple sub in single regex.
Python