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'3.4-'
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'3.4-3.6'
>>> str(VersionRange(minver='3.4', maxver='4.0'))
'3.4-4.0'
>>> str(VersionRange(maxver='3.7'))
'-3.7'
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"VersionRange(minver='5.0')"
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True
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True
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True
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[Version('3.0'), Version('3.1'), Version('3.2')]
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