Use codecov instead of coveralls (networkx#2577)

.codecov.yml

@@ -0,0 +1 @@
+comment: off

.coveragerc

@@ -1,44 +1,4 @@
-# .coveragerc to control coverage.py
 [run]
-branch = False
+branch = True
 source = networkx
-omit = */tests/*,*release.py, */external/*
-
-
-[report]
-# Regexes for lines to exclude from consideration
-exclude_lines =
-    # Have to re-enable the standard pragma
-    pragma: no cover
-
-    # Don't complain about missing debug-only code:
-    def __repr__
-    if self\.debug
-
-    # Don't complain if tests don't hit defensive assertion code:
-    raise AssertionError
-    raise NotImplementedError
-
-    # Don't complain if non-runnable code isn't run:
-    if 0:
-    if __name__ == .__main__.:
-
-    # ignore fixtures
-    def setup_module
-    def teardown_module
-
-    # ignore missing import
-    #except ImportError
-    #raise ImportError
-
-    # runtime errors
-    except RuntimeError 
-
-    # hard to test (potentially long running)
-    def random_powerlaw_tree_sequence
-    def random_powerlaw_tree
-
-ignore_errors = True
-
-[html]
-directory = coverage_html_report
+omit = */tests/*, *release.py

.travis.yml

@@ -110,7 +110,7 @@ install:
       pip install pydot scikits.sparse lxml;
     fi
   - if [[ "${PYTHON_VM}" != ipy ]]; then
-      pip install --upgrade nose coverage coveralls;
+      pip install --upgrade nose coverage codecov;
       pip install nose-ignore-docstring;
     fi
 
@@ -162,13 +162,8 @@ after_success:
   # repository paths. This is what `fixcoverage.py` does.
   #
   # Report coverage for 2.7 and 3.4 miniconda runs only.
-  - if [[ "${PYTHON_VM}" != ipy ]]; then
-      cp .coverage $TRAVIS_BUILD_DIR;
-      cd $TRAVIS_BUILD_DIR;
-      if [[ "${TRAVIS_PYTHON_VERSION}${OPTIONAL_DEPS}" =~ 2\.7miniconda|3\.4miniconda ]]; then
-        python fixcoverage.py ".*/networkx/" "$TRAVIS_BUILD_DIR/networkx/";
-        coveralls;
-      fi;
+  - if [[ "${TRAVIS_PYTHON_VERSION}${OPTIONAL_DEPS}" =~ 2\.7miniconda|3\.4miniconda ]]; then
+      codecov;
     fi
 
 notifications:

README.rst

@@ -11,8 +11,8 @@ NetworkX
    :target: https://readthedocs.org/projects/networkx/?badge=latest
    :alt: Documentation Status
 
-.. image:: https://coveralls.io/repos/networkx/networkx/badge.svg?branch=master
-   :target: https://coveralls.io/r/networkx/networkx?branch=master
+.. image:: https://codecov.io/gh/networkx/networkx/branch/master/graph/badge.svg
+  :target: https://codecov.io/gh/networkx/networkx
 
 NetworkX is a Python package for the creation, manipulation,
 and study of the structure, dynamics, and functions