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networkx.drawing.nx_pydot.write_dot creates empty file if pydot wasn't installed #3865

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networkx.drawing.nx_pydot.write_dot creates empty file if pydot wasn't installed#3865
@miparnisari

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@miparnisari
miparnisari
opened on Mar 13, 2020

Problem: this code

networkx/networkx/drawing/nx_pydot.py

Lines 24 to 25 in 02a1721

@open_file(1, mode='w')
def write_dot(G, path):

Is creating the DOT file even before checking if pydot has been installed. If it hasn't, then the resulting DOT file will be an empty file.

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