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[英]What is the "+01:00" in "2006-04-03 08:00:00+01:00" datetime timestamp object?
[英]datetime index KeyError: 'the label [2000-01-03 00:00:00] is not in the [index]'
我有一個生成的pandas數據幀
dates = pandas.date_range('1/1/2000', periods=8)
df = pandas.DataFrame(rd.randn(8, 5), index=dates, columns=['call/put', 'expiration', 'strike', 'ask', 'bid'])
df.iloc[2,4]=0
df.iloc[2,3]=0
df.iloc[3,4]=0
df.iloc[3,3]=0
df.iloc[2,2]=0.5
df=df.append(df.iloc[2:3])
df.iloc[8:9,3:5]=1
df.iloc[8:9,2:3]=0.6
df=df.append(df.iloc[8:9])
df.iloc[9,2]=0.4
從df我獲得df4
df4=df[(df["ask"]==0) & (df["bid"]==0)]
當通過df4行進行循環時
for index, row in df4.iterrows():
print index
df_upperbound = df.iloc[index]
我得到索引KeyError:'標簽[2000-01-03 00:00:00]不在[index]'中。 在嘗試時
for index, row in df4.iterrows():
print index
df_upperbound = df.xs[index]
我得到TypeError:'instancemethod'對象沒有屬性' getitem '。 我使用pandas 0.14.0和python 2.7.7。 如何在df內迭代df4的索引?
該文檔提供了許多索引datetime
索引DataFrame
,例如:
In [64]:
index
Out[64]:
Timestamp('2000-01-03 00:00:00')
In [65]:
print df.ix[index.to_datetime()]
call/put expiration strike ask bid
2000-01-03 0.830035 -0.42598 0.5 0 0
2000-01-03 0.830035 -0.42598 0.6 1 1
2000-01-03 0.830035 -0.42598 0.4 1 1
In [66]:
print df.ix[index]
call/put expiration strike ask bid
2000-01-03 0.830035 -0.42598 0.5 0 0
2000-01-03 0.830035 -0.42598 0.6 1 1
2000-01-03 0.830035 -0.42598 0.4 1 1
In [67]:
print df[index.strftime('%m/%d/%y')]
call/put expiration strike ask bid
2000-01-03 0.830035 -0.42598 0.5 0 0
2000-01-03 0.830035 -0.42598 0.6 1 1
2000-01-03 0.830035 -0.42598 0.4 1 1
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