I'm trying to replace a specific value in my dataframe

user_17730651 0
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i have a row that consists of days of the week but there is a random number in there and i just want to replace that number with "Thur" i tried . replace but my then all the other columns in my df disappeared except for the index and the column that had the days of the week

sales=sales["day of week"].replace(0, "Thru")

^^^this is the code i used this is the df before i ran the code this is the df before i ran the code

This is the df after i ran the code

This is the df after i ran the code

pandas python
2 Answers

You assign only the day of week column into sales, so it makes sense you get only one column. Try:

sales["day of week"]=sales["day of week"].replace(0, "Thru")

If it doesn't work (because day of week is an object type column), try:

sales["day of week"]=sales["day of week"].replace('0', "Thru")
user_63961450

In pandas, replacing values can be done with .loc.

In your case the following should work:

sales.loc[sales["day of week"] == 0, "day of week"] = "Thru"
user_125842970
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