<div>
Searching a little more, it seems a less manual way to fix this:<br />
<a href="http://stackoverflow.com/questions/19689652/unable-to-find-vcvarsall-bat-using-python-2-7" rel="ugc">http://stackoverflow.com/questions/19689652/unable-to-find-vcvarsall-bat-using-python-2-7</a><br />
<br />
Regards,<br />
Walter.
</div>


Searching a little more, it seems a less manual way to fix this:
http://stackoverflow.com/questions/19689652/unable-to-find-vcvarsall-bat-using-python-2-7 [http://stackoverflow.com/questions/19689652/unable-to-find-vcvarsall-bat-using-python-2-7]

Regards,
Walter.

<div>
can you download the express version, or does python require the full paid version of VS?
</div>


can you download the express version, or does python require the full paid version of VS?

<div>
The 2nd solution lost me a bit, is setenv a python specific command? Or linked to visual studio?
</div>


The 2nd solution lost me a bit, is setenv a python specific command? Or linked to visual studio?

<div>
In fact, you dont need visual studio itself. If you can download the .NET distribution (just the framework dlls, etc), should be enough.
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In fact, you dont need visual studio itself. If you can download the .NET distribution (just the framework dlls, etc), should be enough.

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<div class="content wysiwyg-content">
I am trying to build and install;<br />
<br />
<a href="https://pypi.python.org/pypi/pycrypto" rel="ugc">https://pypi.python.org/pypi/pycrypto</a><br />
<br />
on a windows 7 machine. I downloaded the tar.gz, unzipped it (this is python 2.7) and ran the command c:\python27\python.exe setup.py build <br />
<br />
but it is giving errors about unable to find vcvarsall.bat?<br />
Are there pre-requirements for installing and building python packages on windows 7 machines?
</div>
</div>


I am trying to build and install;

https://pypi.python.org/pypi/pycrypto

on a windows 7 machine. I downloaded the tar.gz, unzipped it (this is python 2.7) and ran the command c:\python27\python.exe setup.py build 

but it is giving errors about unable to find vcvarsall.bat?
Are there pre-requirements for installing and building python packages on windows 7 machines?

building python packages vcvarsall

Python is a widely used general-purpose, high-level programming language. Its design philosophy emphasizes code readability, and its syntax allows programmers to express concepts in fewer lines of code than would be possible in other languages. Python supports multiple programming paradigms, including object-oriented, imperative and functional programming or procedural styles. It features a dynamic type system and automatic memory management and has a large and comprehensive set of standard libraries, including NumPy, SciPy, Django, PyQuery, and PyLibrary.

Python

Programming includes both the specifics of the language you’re using, like Visual Basic, .NET, Java and others, but also the best practices in user experience and interfaces and the management of projects, version control and development. Other programming topics are related to web and cloud development and system and hardware programming.

Programming

A scripting language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator. Scripting languages are often interpreted (rather than compiled). Primitives are usually the elementary tasks or API calls, and the language allows them to be combined into more complex programs. Environments that can be automated through scripting include software applications, web pages within a web browser, the shells of operating systems (OS), embedded systems, as well as numerous games. A scripting language can be viewed as a domain-specific language for a particular environment; in the case of scripting an application, this is also known as an extension language.