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"""
This package contains third party libraries that igraph depends on and that
are small enough to be distributed with igraph itself.
The primary entry point of this module is ``vendor_import``, a function that
first tries to import a particular library using the standard Python mechanism
and falls back to the version of the library provided within ``igraph.vendor``
if the standard Python import fails.
The libraries contained within igraph are as follows:
- `texttable`, a library to print ASCII tables, by Gerome Fournier.
See <http://foutaise.org/code/>.
"""
__license__ = "GPL"
__all__ = ["vendor_import"]
__docformat__ = "restructuredtext en"
def vendor_import(module_name):
"""Tries to import a module name ``module_name`` using the standard Python
`import` statement and return the imported module. If the import fails,
tries to import a module of the same name from within ``igraph.vendor``
and return that module instead.
"""
parts = module_name.split(".")
try:
result = __import__(module_name, level=0)
except ImportError:
result = __import__("igraph.vendor.%s" % module_name, level=0)
parts[0:0] = ["igraph", "vendor"]
parts.pop(0)
while parts:
result = getattr(result, parts.pop(0))
return result
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