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# Python on it's own is useful but limited in it's abilities.  One of it's
# chief strengths is that it is easy to extend and it is this extensibility
# that adds real depth and power to Python.  And makes it a community project
# by default.
#
# Extensions to the basic Python are called "modules".  There is a large number
# of them.  OzFluxQC makes use of many, several of which are "external".  External
# modules are :
#  - configobj
#    - this is the module that reads control files
# - dateutil
#   - as the name suggests, a collection of datetime utilities
# - matplotlib
#   - a powerful 2D (and some 3D) plotting package
# - netCDF4
#   -