List command for manylinux images

python_appimage/commands/list.py

@@ -0,0 +1,41 @@
+import os
+
+from ..utils.docker import docker_run
+from ..utils.log import log
+from ..utils.tmp import TemporaryDirectory
+
+
+__all__ = ['execute']
+
+
+def _unpack_args(args):
+    '''Unpack command line arguments
+    '''
+    return (args.tag,)
+
+
+def execute(tag):
+    '''List python versions installed in a manylinux image
+    '''
+
+    with TemporaryDirectory() as tmpdir:
+        script = (
+            'for dir in $(ls /opt/python | grep "^cp[0-9]"); do',
+            '   version=$(/opt/python/$dir/bin/python -c "import sys; ' \
+                    'sys.stdout.write(sys.version.split()[0])")',
+            '   echo "$dir $version"',
+            'done',
+        )
+        if tag.startswith('2_'):
+            image = 'manylinux_' + tag
+        else:
+            image = 'manylinux' + tag
+        result = docker_run(
+            'quay.io/pypa/' + image,
+            script,
+            capture = True
+        )
+        for line in result.split(os.linesep):
+            if line:
+                log('LIST', "{1:7} ->  /opt/python/{0:}".format(
+                    *line.split()))