Introduction

pipAlwaysLatest is a wrapper around pip, so you must have pip installed or using Python3.4 which has pip installed by default.
The reason I wrote this is sometimes I find it hard to install the latest version of packages using requirements.txt in that it always set specific versions. For most third-party packages, their existing APIs are stable, so installing the latest version is safer than you might think. Therefore I wrote this to help me do this, and in case certain version of packages are necessary, it's also possible to install them according to versions in requirements.txt by adding package name as argument.

Usage

usage: piplatest.py [-h] [-v USE_VERSION [USE_VERSION ...]] method

pip install/freeze latest version

positional arguments:
  methodmethod you want to apply, install/freeze

optional arguments:
  -h, --helpshow this help message and exit
  -v USE_VERSION [USE_VERSION ...], --version-packages USE_VERSION [USE_VERSION ...]
specify packages that will reserve version when
generating requirements or install from requirements

Example

pip freeze wrapper

1. Generate requirements.txt without version info:

   $ python piplatest.py freeze  

2. Generate requirements.txt and keep some packages' version info:

   $ python piplatest.py freeze -v django six   

   django and six will keep version info in requirements.txt:

    pkgA
    django==1.6.3
    ...
    six==1.4.1
    pkgB
    ...
   

pip install -r wrapper

1. Install from requirements.txt using the latest version.

   $ python piplatest.py install   

   Make sure you have a requirements.txt in the current working directory.

2. Install from requirements.txt using the latest version except for some packages:

   $ python piplatest.py install -v django six  

   For this case, django and six will install the version specified in requirements.txt, others packages use the latest.