为什么我不能在 pandas 中使用 dropna() function 删除 NAN 值

Question

simple i make pandas data frame from dictionary then use dropna I dont know why its not removing NaN

df=pd.DataFrame(dic)
df.dropna(axis=1,inplace=True)
df.head()

my code link(not completed) https://colab.research.google.com/drive/1HoniG14dUZbERxDm9QKowjkpacK3wyt5?usp=sharing

Answer 1

You likely have "NaN" strings. You should first convert them to real NA values. Let's use pd.NA :

df = df.replace('NaN', pd.NA).dropna(axis=1)