Questions tagged [pandas-settingwithcopy-warning]
25 questions
1354
votes
21 answers
How to deal with SettingWithCopyWarning in Pandas
Background
I just upgraded my Pandas from 0.11 to 0.13.0rc1. Now, the application is popping out many new warnings. One of them like this:
E:\FinReporter\FM_EXT.py:449: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a…
bigbug
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3 answers
Avoid raising Setting with copy warning
Suppose I have a dataframe df with columns a, b, c, d and I want to subtract mean of the columns from columns a,b,d. How do I achieve the same?
I have tried df[['a','b','d']] = df[['a','b','d']] - df[['a','b','d']].mean() but I get…
Uqhah
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vote
1 answer
SettingWithCopyWarning in Pandas 1.5.3 not working
I'm aware there are a few threads about this but I'm having trouble with the actual SettingWithCopyWarning itself so none of them are of any help.
I've recently nuked my machine and am in the process of reinstalling Pycharm and all the libraries…
top bantz
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1 answer
Setting With Copy Warning when trying to change value from a column
I am trying to do the following.
df_county_outcomes['county'] = df_county_outcomes['county'].apply(lambda x : '0' + str(x) if len(str(x)) == 1 else str(x))
I get the correct result but the SettingWithCopyWarning will always be there. Can someone…
Nikos Kakonas
- 11
- 1
0
votes
1 answer
How to fix SettingWithCopyWarning?
I'm trying to create a new column in my dataframe and get a SettingWithCopyWarning error. I've had a look at the other questions about this on the site but can't seem to fix the issue that I'm having.
This was the original…
Pop23
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0
votes
2 answers
How to fix deprecation warning when setting on a slice
I'm trying to add a year to each observation in a pandas dataframe until each observation is within a specified date range.
for i in range(0,3):
df.loc[df['date'] < "2023-06-01", 'date'] = df['date'] + pd.DateOffset(years=1)
I'm getting…
rasputin
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0
votes
0 answers
What is the optimal way to turn a category column into a set of columns for a linear regression algorithm?
I am trying to turn category columns into a set of columns each corresponding to a unique value in the original column with boolean values showing what the category is for that case.
My latest try involves this user defined function:
def cath_column…
ychvez
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0
votes
1 answer
Why am I getting a 'SettingWithCopyWarning' in my Pandas dataframe and how do I fix it?
SettingWithCopyWarning with Pandas
I have continued to encounter this warning after reading much of the documentation, including the warning link:…
mle
- 1
0
votes
0 answers
I get error SettingWithCopyWarning trying to concate two columns of a data frame in one new column
I am trying to concatenate two columns of a dataframe in a new one and add it to the same data frame, but I keep getting this error:
SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame.Try using…
0
votes
0 answers
Correct way to perform operation on a slice of a pandas dataframe?
I am trying to write a function to de deseasonalize any pandas dataframe. This always works, but I still get the "SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame"
Is this not the correct way to set a…
peter_wx
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votes
0 answers
SettingWithCopyWarning while using label encoder
from sklearn.preprocessing import LabelEncoder
object_cols = ['Gender', 'Married', 'Dependents', 'Education', 'Self_Employed', 'Credit_History', 'Property_Area', 'Loan_Status']
label_encoder = LabelEncoder()
for col in object_cols:
…
sojc
- 1
0
votes
0 answers
SettingWithCopyWarning when concatenating strings in Python
I have two dataframes that I am joining based on client name. The issue is that for my dataframe called screening the name is formatted as Lastname, Firstname, and my other dataframe uses Firstname Lastname. I use the following code to split the…
Jordin M
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votes
0 answers
resolving a SettingWithCopyWarning in a Python script
I'm new to Python and working on a project to learn more using a yfinance example. When I run the script below, I get a SettingWithCopy warning. After reading several articles here and elsewhere, I'm not able to resolve the warning. Guidance much…
chorink65
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0
votes
0 answers
Using loc and copy to subset a DF and still SettingWithCopyWarning
I have been struggling with the SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame, although I have specifically changed my code to avoid it.
def df_creation(df,per):
# Sorting the categories
df_cat_3 =…
Romane
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0
votes
0 answers
SettingWithCopyWarning: python 3
I am trying to create a column from the existing df and ending up with SettingWithCopyWarning. how do I fix it? what the best way to create a new column from the old one.
adding start hour using slicing from an existing column.
df3["start_hour"] =…
tester
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