熊猫数据框放置NaN和NaT

时间:2019-03-11 22:16:18

标签: python pandas dataframe

我正在做的是用熊猫生成一个DataFrame:

df_output = pd.DataFrame(columns={"id","Payout date", "Amount"}

“付款日期”列中为日期时间,“金额”列中为浮点数。我正在从csv中获取每一行的值:

df=pd.read_csv("file.csv", encoding = "ISO-8859-1", low_memory=False)

但是当我分配值时:

df_output.loc[df_output['id'] == index, 'Payout date'].iloc[0]=(parsed_date)
pay=payments.get()
ref=refunds.get()
df_output.loc[df_output['id'] == index, 'Amount'].iloc[0]=(pay+ref-for_next_day)

,我将其打印在“付款日期”和“金额”列中,即使正确地将其打印为id,使用NaT表示付款,使用NaN表示金额,即使将其强制转换为浮点数,或使用

df_output['Amount']=pd.to_numeric(df_output['Amount'])
df_output['Payout date'] = pd.to_datetime(df_output['Payout date'])

我也曾尝试过将值传递给DataFrame之前强制转换值,但是没有运气,所以我得到的是:

id Payout date  Amount
1         NaT     NaN
2         NaT     NaN
3         NaT     NaN
4         NaT     NaN
5         NaT     NaN

相反,我正在寻找这样的东西:

id       Payout date  Amount
1         2019-03-11     3.2
2         2019-03-11     3.2
3         2019-03-11     3.2
4         2019-03-11     3.2
5         2019-03-11     3.2

编辑

print(df_output.head(5))
print(df.head(5))

id Payout date  Amount
1         NaT     NaN
2         NaT     NaN
3         NaT     NaN
4         NaT     NaN
5         NaT     NaN

id       Created (UTC)    Type Currency  Amount    Fee     Net
1 2016-07-27 13:28:00  charge      mxn   672.0  31.54  640.46
2 2016-07-27 15:21:00  charge      mxn   146.0   9.58  136.42
3 2016-07-27 16:18:00  charge      mxn   200.0  11.83  188.17
4 2016-07-27 17:18:00  charge      mxn   146.0   9.58  136.42
5 2016-07-27 18:11:00  charge      mxn   286.0  15.43  270.57

0 个答案:

没有答案