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diff --git a/tox.ini b/tox.ini
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index 6d72c6e..b54f815 100644
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--- a/tox.ini
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+++ b/tox.ini
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@@ -8,15 +8,6 @@ minversion = 3.15
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 envlist = py27,py3{4,5,6,7,8,9},pypy,py{27,38,39}-flake8
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 [testenv]
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-basepython =
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-    py27: {env:TOXPYTHON:python2.7}
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-    py34: {env:TOXPYTHON:python3.4}
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-    py35: {env:TOXPYTHON:python3.5}
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-    py36: {env:TOXPYTHON:python3.6}
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-    py37: {env:TOXPYTHON:python3.7}
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-    py38: {env:TOXPYTHON:python3.8}
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-    py39: {env:TOXPYTHON:python3.9}
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-    pypy: {env:TOXPYTHON:pypy}
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 commands =
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     {envpython} --version
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     {envpython} -c "import struct; print(struct.calcsize('P') * 8)"