ImportError: No module named pandas

Question

I am trying to write code in Python to fetch Twitter data, and I am not getting an error for twython. But I am getting an error for Pandas.

I have installed Pandas using pip install pandas. But I still get the following error. How can I fix it?

F:\> pip install pandas Collecting pandas c:\python27\lib\site-packages\pip\_vendor\requests\packages\urllib3\util\ssl_.py :90: InsecurePlatformWarning: A true SSLContext object is not available. This pr events urllib3 from configuring SSL appropriately and may cause certain SSL conn ections to fail. For more information, see https://urllib3.readthedocs.org/en/la test/security.html#insecureplatformwarning.   InsecurePlatformWarning   Using cached pandas-0.17.0-cp27-none-win32.whl Requirement already satisfied (use --upgrade to upgrade): pytz>=2011k in c:\pyth on27\lib\site-packages (from pandas) Requirement already satisfied (use --upgrade to upgrade): python-dateutil in c:\ python27\lib\site-packages (from pandas) Collecting numpy>=1.7.0 (from pandas)   Downloading numpy-1.10.1.tar.gz (4.0MB)     100% |################################| 4.1MB 26kB/s Requirement already satisfied (use --upgrade to upgrade): six>=1.5 in c:\python2 7\lib\site-packages (from python-dateutil->pandas) Building wheels for collected packages: numpy   Running setup.py bdist_wheel for numpy   Complete output from command c:\python27\python.exe -c "import setuptools;__fi le__='c:\\users\\sangram\\appdata\\local\\temp\\pip-build-m6knxg\\numpy\\setup.p y';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))"  bdist_wheel -d c:\users\sangram\appdata\local\temp\tmppmwkw4pip-wheel-:   Running from numpy source directory.   usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]      or: -c --help [cmd1 cmd2 ...]      or: -c --help-commands      or: -c cmd --help    error: invalid command 'bdist_wheel'    ----------------------------------------   Failed building wheel for numpy Failed to build numpy Installing collected packages: numpy, pandas   Running setup.py install for numpy     Complete output from command c:\python27\python.exe -c "import setuptools, t okenize;__file__='c:\\users\\sangram\\appdata\\local\\temp\\pip-build-m6knxg\\nu mpy\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().rep lace('\r\n', '\n'), __file__, 'exec'))" install --record c:\users\sangram\appdat a\local\temp\pip-ll4zaf-record\install-record.txt --single-version-externally-ma naged --compile:     blas_opt_info:     blas_mkl_info:       libraries mkl,vml,guide not found in ['c:\\python27\\lib', 'C:\\', 'c:\\py thon27\\libs']       NOT AVAILABLE      openblas_info:       libraries openblas not found in ['c:\\python27\\lib', 'C:\\', 'c:\\python2 7\\libs']       NOT AVAILABLE      atlas_3_10_blas_threads_info:     Setting PTATLAS=ATLAS       libraries tatlas not found in ['c:\\python27\\lib', 'C:\\', 'c:\\python27\ \libs']       NOT AVAILABLE      atlas_3_10_blas_info:       libraries satlas not found in ['c:\\python27\\lib', 'C:\\', 'c:\\python27\ \libs']       NOT AVAILABLE      atlas_blas_threads_info:     Setting PTATLAS=ATLAS       libraries ptf77blas,ptcblas,atlas not found in ['c:\\python27\\lib', 'C:\\ ', 'c:\\python27\\libs']       NOT AVAILABLE      atlas_blas_info:       libraries f77blas,cblas,atlas not found in ['c:\\python27\\lib', 'C:\\', ' c:\\python27\\libs']       NOT AVAILABLE      blas_info:       libraries blas not found in ['c:\\python27\\lib', 'C:\\', 'c:\\python27\\l ibs']       NOT AVAILABLE      blas_src_info:       NOT AVAILABLE        NOT AVAILABLE      non-existing path in 'numpy\\distutils': 'site.cfg'     F2PY Version 2     lapack_opt_info:     openblas_lapack_info:       libraries openblas not found in ['c:\\python27\\lib', 'C:\\', 'c:\\python2 7\\libs']       NOT AVAILABLE      lapack_mkl_info:     mkl_info:       libraries mkl,vml,guide not found in ['c:\\python27\\lib', 'C:\\', 'c:\\py thon27\\libs']       NOT AVAILABLE        NOT AVAILABLE      atlas_3_10_threads_info:     Setting PTATLAS=ATLAS       libraries tatlas,tatlas not found in c:\python27\lib       libraries lapack_atlas not found in c:\python27\lib       libraries tatlas,tatlas not found in C:\       libraries lapack_atlas not found in C:\       libraries tatlas,tatlas not found in c:\python27\libs       libraries lapack_atlas not found in c:\python27\libs     <class 'numpy.distutils.system_info.atlas_3_10_threads_info'>       NOT AVAILABLE      atlas_3_10_info:       libraries satlas,satlas not found in c:\python27\lib       libraries lapack_atlas not found in c:\python27\lib       libraries satlas,satlas not found in C:\       libraries lapack_atlas not found in C:\       libraries satlas,satlas not found in c:\python27\libs       libraries lapack_atlas not found in c:\python27\libs     <class 'numpy.distutils.system_info.atlas_3_10_info'>       NOT AVAILABLE      atlas_threads_info:     Setting PTATLAS=ATLAS       libraries ptf77blas,ptcblas,atlas not found in c:\python27\lib       libraries lapack_atlas not found in c:\python27\lib       libraries ptf77blas,ptcblas,atlas not found in C:\       libraries lapack_atlas not found in C:\       libraries ptf77blas,ptcblas,atlas not found in c:\python27\libs       libraries lapack_atlas not found in c:\python27\libs     <class 'numpy.distutils.system_info.atlas_threads_info'>       NOT AVAILABLE      atlas_info:       libraries f77blas,cblas,atlas not found in c:\python27\lib       libraries lapack_atlas not found in c:\python27\lib       libraries f77blas,cblas,atlas not found in C:\       libraries lapack_atlas not found in C:\       libraries f77blas,cblas,atlas not found in c:\python27\libs       libraries lapack_atlas not found in c:\python27\libs     <class 'numpy.distutils.system_info.atlas_info'>       NOT AVAILABLE      lapack_info:       libraries lapack not found in ['c:\\python27\\lib', 'C:\\', 'c:\\python27\ \libs']       NOT AVAILABLE      lapack_src_info:       NOT AVAILABLE        NOT AVAILABLE      running install     running build     running config_cc     unifing config_cc, config, build_clib, build_ext, build commands --compiler options     running config_fc     unifing config_fc, config, build_clib, build_ext, build commands --fcompiler  options     running build_src     build_src     building py_modules sources     creating build     creating build\src.win32-2.7     creating build\src.win32-2.7\numpy     creating build\src.win32-2.7\numpy\distutils     building library "npymath" sources     Running from numpy source directory.     c:\users\sangram\appdata\local\temp\pip-build-m6knxg\numpy\numpy\distutils\s ystem_info.py:1651: UserWarning:         Atlas (http://math-atlas.sourceforge.net/) libraries not found.         Directories to search for the libraries can be specified in the         numpy/distutils/site.cfg file (section [atlas]) or by setting         the ATLAS environment variable.       warnings.warn(AtlasNotFoundError.__doc__)     c:\users\sangram\appdata\local\temp\pip-build-m6knxg\numpy\numpy\distutils\s ystem_info.py:1660: UserWarning:         Blas (http://www.netlib.org/blas/) libraries not found.         Directories to search for the libraries can be specified in the         numpy/distutils/site.cfg file (section [blas]) or by setting         the BLAS environment variable.       warnings.warn(BlasNotFoundError.__doc__)     c:\users\sangram\appdata\local\temp\pip-build-m6knxg\numpy\numpy\distutils\s ystem_info.py:1663: UserWarning:         Blas (http://www.netlib.org/blas/) sources not found.         Directories to search for the sources can be specified in the         numpy/distutils/site.cfg file (section [blas_src]) or by setting         the BLAS_SRC environment variable.       warnings.warn(BlasSrcNotFoundError.__doc__)     c:\users\sangram\appdata\local\temp\pip-build-m6knxg\numpy\numpy\distutils\s ystem_info.py:1552: UserWarning:         Atlas (http://math-atlas.sourceforge.net/) libraries not found.         Directories to search for the libraries can be specified in the         numpy/distutils/site.cfg file (section [atlas]) or by setting         the ATLAS environment variable.       warnings.warn(AtlasNotFoundError.__doc__)     c:\users\sangram\appdata\local\temp\pip-build-m6knxg\numpy\numpy\distutils\s ystem_info.py:1563: UserWarning:         Lapack (http://www.netlib.org/lapack/) libraries not found.         Directories to search for the libraries can be specified in the         numpy/distutils/site.cfg file (section [lapack]) or by setting         the LAPACK environment variable.       warnings.warn(LapackNotFoundError.__doc__)     c:\users\sangram\appdata\local\temp\pip-build-m6knxg\numpy\numpy\distutils\s ystem_info.py:1566: UserWarning:         Lapack (http://www.netlib.org/lapack/) sources not found.         Directories to search for the sources can be specified in the         numpy/distutils/site.cfg file (section [lapack_src]) or by setting         the LAPACK_SRC environment variable.       warnings.warn(LapackSrcNotFoundError.__doc__)     c:\python27\lib\distutils\dist.py:267: UserWarning: Unknown distribution opt ion: 'define_macros'       warnings.warn(msg)     error: Unable to find vcvarsall.bat      ---------------------------------------- Command "c:\python27\python.exe -c "import setuptools, tokenize;__file__='c:\\us ers\\sangram\\appdata\\local\\temp\\pip-build-m6knxg\\numpy\\setup.py';exec(comp ile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __fi le__, 'exec'))" install --record c:\users\sangram\appdata\local\temp\pip-ll4zaf- record\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in c:\users\sangram\appdata\local\temp\pip-build-m6knxg\numpy  F:\>python tweet_fetcher.py Traceback (most recent call last):   File "tweet_fetcher.py", line 1, in <module>     import pandas ImportError: No module named pandas 

Answer 1

You're missing a few (not terribly clear) steps. Pandas is distributed through pip as a wheel, which means you need to do:

pip install wheel pip install pandas 

You're probably going to run into other issues after this - it looks like you're installing on Windows which isn't the most friendly of targets for NumPy, SciPy, and Pandas. Alternatively, you could pickup a binary installer from here.

You also had an error installing NumPy. Like before, I recommend grabbing a binary installer for this, as it's not a simple process. However, you can resolve your current error by installing this package from Microsoft.

While it's completely possible to get a perfect environment setup on Windows, I have found the quality-of-life for a Python developer is vastly improved by setting up a Debian VM. Especially with the scientific packages, you will run into many cases like this.