我有一个类似于下面的Pandas DataFrame。请注意，此格式不必一定是这种格式，它可以重新设置为透视样式，如果方便的话，可以将每个 ERROR: Command errored out with exit status 1:
command: 'c:\users\r0504\appdata\local\programs\python\python37\python.exe' 'c:\users\r0504\appdata\local\programs\python\python37\lib\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\r0504\AppData\Local\Temp\pip-build-env-vv312rqa\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel pycairo
cwd: None
Complete output (33 lines):
Collecting setuptools
Using cached setuptools-45.1.0-py3-none-any.whl (583 kB)
Collecting wheel
Using cached wheel-0.34.1-py2.py3-none-any.whl (26 kB)
Collecting pycairo
Using cached pycairo-1.19.0.tar.gz (200 kB)
Installing collected packages: setuptools, wheel, pycairo
Running setup.py install for pycairo: started
Running setup.py install for pycairo: finished with status 'error'
ERROR: Command errored out with exit status 1:
command: 'c:\users\r0504\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\r0504\\AppData\\Local\\Temp\\pip-install-irw93yia\\pycairo\\setup.py'"'"'; __file__='"'"'C:\\Users\\r0504\\AppData\\Local\\Temp\\pip-install-irw93yia\\pycairo\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\r0504\AppData\Local\Temp\pip-record-0_k2qosq\install-record.txt' --single-version-externally-managed --prefix 'C:\Users\r0504\AppData\Local\Temp\pip-build-env-vv312rqa\overlay' --compile --install-headers 'C:\Users\r0504\AppData\Local\Temp\pip-build-env-vv312rqa\overlay\Include\pycairo'
cwd: C:\Users\r0504\AppData\Local\Temp\pip-install-irw93yia\pycairo\
Complete output (18 lines):
running install
running build
running build_py
creating build
creating build\lib.win-amd64-3.7
creating build\lib.win-amd64-3.7\cairo
copying cairo\__init__.py -> build\lib.win-amd64-3.7\cairo
copying cairo\__init__.pyi -> build\lib.win-amd64-3.7\cairo
copying cairo\py.typed -> build\lib.win-amd64-3.7\cairo
running build_ext
building 'cairo._cairo' extension
creating build\temp.win-amd64-3.7
creating build\temp.win-amd64-3.7\Release
creating build\temp.win-amd64-3.7\Release\cairo
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DPYCAIRO_VERSION_MAJOR=1 -DPYCAIRO_VERSION_MINOR=19 -DPYCAIRO_VERSION_MICRO=0 -Ic:\users\r0504\appdata\local\programs\python\python37\include -Ic:\users\r0504\appdata\local\programs\python\python37\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" /Tccairo/device.c /Fobuild\temp.win-amd64-3.7\Release\cairo/device.obj
device.c
C:\Users\r0504\AppData\Local\Temp\pip-install-irw93yia\pycairo\cairo\pycairo.h(37): fatal error C1083: Cannot open include file: 'cairo.h': No such file or directory
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.24.28314\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\r0504\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\r0504\\AppData\\Local\\Temp\\pip-install-irw93yia\\pycairo\\setup.py'"'"'; __file__='"'"'C:\\Users\\r0504\\AppData\\Local\\Temp\\pip-install-irw93yia\\pycairo\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\r0504\AppData\Local\Temp\pip-record-0_k2qosq\install-record.txt' --single-version-externally-managed --prefix 'C:\Users\r0504\AppData\Local\Temp\pip-build-env-vv312rqa\overlay' --compile --install-headers 'C:\Users\r0504\AppData\Local\Temp\pip-build-env-vv312rqa\overlay\Include\pycairo' Check the logs for full command output.
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\r0504\appdata\local\programs\python\python37\python.exe' 'c:\users\r0504\appdata\local\programs\python\python37\lib\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\r0504\AppData\Local\Temp\pip-build-env-vv312rqa\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel pycairo Check the logs for full command output.
列为一列。
variable对于 date variable value
0 2014-01-31 item1 0.070898
1 2014-02-28 item1 0.064725
2 2014-03-31 item1 0.101292
3 2014-04-30 item1 0.041898
4 2014-05-31 item1 0.094894
5 2014-06-30 item1 0.110287
6 2014-07-31 item1 0.081844
7 2014-08-31 item1 0.043819
8 2014-09-30 item1 0.009196
9 2014-10-31 item1 0.076482
10 2014-11-30 item1 0.055906
11 2014-12-31 item1 0.042028
12 2015-01-31 item1 0.115469
13 2015-02-28 item1 0.130457
14 2015-03-31 item1 0.054314
15 2015-04-30 item1 0.141286
16 2015-05-31 item1 0.109387
17 2015-06-30 item1 0.066154
18 2015-07-31 item1 0.039390
19 2015-08-31 item1 0.071276
20 2015-09-30 item1 0.088784
21 2015-10-31 item1 0.054234
22 2015-11-30 item1 0.111854
23 2015-12-31 item1 0.005053
24 2016-01-31 item1 0.145953
25 2016-02-29 item1 0.138051
26 2016-03-31 item1 0.030395
27 2016-04-30 item1 0.055843
28 2016-05-31 item1 0.037960
29 2016-06-30 item1 0.147318
.. ... ... ...
120 2015-09-30 ref 0.043185
121 2015-10-31 ref 0.046849
122 2015-11-30 ref 0.008139
123 2015-12-31 ref 0.011222
124 2016-01-31 ref 0.026408
125 2016-02-29 ref 0.040404
126 2016-03-31 ref 0.039585
127 2016-04-30 ref 0.028782
128 2016-05-31 ref 0.002799
129 2016-06-30 ref 0.040413
130 2016-07-31 ref 0.004451
131 2016-08-31 ref 0.001946
132 2016-09-30 ref 0.029548
133 2016-10-31 ref 0.029416
134 2016-11-30 ref 0.024893
135 2016-12-31 ref 0.037656
136 2017-01-31 ref 0.045642
137 2017-02-28 ref 0.046690
138 2017-03-31 ref 0.019193
139 2017-04-30 ref 0.016362
140 2017-05-31 ref 0.025512
141 2017-06-30 ref 0.021625
142 2017-07-31 ref 0.026472
143 2017-08-31 ref 0.016531
144 2017-09-30 ref 0.047447
145 2017-10-31 ref 0.032180
146 2017-11-30 ref 0.048635
147 2017-12-31 ref 0.040450
148 2018-01-31 ref 0.047735
149 2018-02-28 ref 0.013727
中的每个项目，我想应用一个12个月的滚动计算，该计算接受该项目的variable的滚动12个月和值{的滚动12个月作为参数1}}等于value。该函数的形式为：
variable我的问题是如何将两个不同的序列传递给此函数以返回单个值。有谁知道该怎么做？
答案 0 :(得分：1)
关于您提到的功能，在用join()重构原始数据帧之后，这可能更接近您想要的功能：
combined = df[df['variable']!='ref'].set_index('date').join(df[df['variable']=='ref'].set_index('date'), lsuffix='', rsuffix='_ref').drop('variable_ref', axis=1)
def func(series, ref_series):
#As an example
return series.mean()/ref_series.mean()
combined.groupby('variable').rolling(12).apply(lambda x: func(x, combined.loc[x.index]['value_ref']), raw=False).drop('value_ref', axis=1)
此示例将产生以下结果（由于示例数据中存在空白，NaN出现了）：
value
variable date
item1 2014-01-31 NaN
2014-02-28 NaN
2014-03-31 NaN
2014-04-30 NaN
2014-05-31 NaN
2014-06-30 NaN
2014-07-31 NaN
2014-08-31 NaN
2014-09-30 NaN
2014-10-31 NaN
2014-11-30 NaN
2014-12-31 NaN
2015-01-31 NaN
2015-02-28 NaN
2015-03-31 NaN
2015-04-30 NaN
2015-05-31 NaN
2015-06-30 NaN
2015-07-31 NaN
2015-08-31 NaN
2015-09-30 1.912186
2015-10-31 1.793184
2015-11-30 2.609254
2015-12-31 3.009455
2016-01-31 3.123833
2016-02-29 2.910599
2016-03-31 2.708132
2016-04-30 2.497878
2016-05-31 2.561760
2016-06-30 2.681712