Python replace period if it's the only value in column

How do I replace ‘.’ in a dataframe if it’s the only value in a cell without also replacing it if it’s part of a decimal number?

Here’s the dataframe

I tried this but it removes all decimals

df = pd.DataFrame({'id':['2.2222','.','.','3.2','1.0']})
df['id'] = df['id'].str.replace('.','',regex=False)

Unwanted result:

This is the desired result:

>Solution :

You could use .loc to do the replace:

df.loc[df['id'] == '.', 'id'] = ''