How to solve MemoryError during pip install ?

If you are trying to install a python package using pip in the embedded boards such as Raspberry Pi or any other device with less than a GB of RAM then you will encounter Memory Error.  .

pip  install SpeechRecognition
Exception:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
.
.
MemoryError

You can solve this using many ways one easy method is to find the package name and use apt-get install and install it from Debian repository instead of using a Python package repo.   Or you can turn off the cache done by pip like here

pip  --no-cache-dir install SpeechRecognition

Or you can simply use a swap partition to avoid the memory crunch

dd if=/dev/zero of=/swapfile bs=1024 count=524288
chown root:root /swapfile
chmod 0600 /swapfile
mkswap /swapfile
swapon /swapfile

And then try to install again.