dianfu commented on a change in pull request #9140:
[FLINK-13299][travis][python] fix flink-python failed on Travis because of
incompatible virtualenv
URL: https://github.com/apache/flink/pull/9140#discussion_r304382809
##########
File path: flink-python/dev/lint-python.sh
##########
@@ -213,6 +213,10 @@ function install_tox() {
fi
fi
+ # virtualenv 16.6.2 released in 2019-07-14 is incompatible with py27 and
py34,
+ # force install an older version(16.0.0) to avoid this problem.
+ $CONDA_PATH install -p $CONDA_HOME -c conda-forge virtualenv=16.0.0 -y -q
2>&1 >/dev/null
+
$CONDA_PATH install -p $CONDA_HOME -c conda-forge tox -y -q 2>&1 >/dev/null
Review comment:
What about changing to
`$CONDA_PATH install -p $CONDA_HOME -c conda-forge virtualenv=16.0.0 tox -y
-q 2>&1 >/dev/null`?
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