python 浮点到逗号，带 2 位小数

Question

Im having a trouble here.

I have this data, "VALOR" is float:

Periodo	VALOR
32021	1096.14
32021	3835.44
32021	2207.90
32021	389.10

I'm trying to change dot to comma, and that ok.

But I need to save the 2 decimals, and when I convert it, it desappear when the last decimal is 0.

df['VALOR'] = np.round(df['VALOR'], decimals=2).astype(str)
df['VALOR'] = df['VALOR'].str.replace('.',',')


df.head()

Periodo	VALOR
32021	1096,14
32021	3835,44
32021	2207,9
32021	389,1

How to get the 2 decimals here?

Regards,

Tanai

Answer 1

Thanks to Anurag https://stackoverflow.com/users/14289892/anurag-dabas

This works

df['VALOR']=df['VALOR'].apply(lambda x: '{:.2f},'.format(x))
df['VALOR'] = df['VALOR'].str.replace('.',',',regex=True)
df['VALOR']=df['VALOR'].str.rstrip(',')