[Enhancement] Add digital version

mmflow/__init__.py

@@ -1,3 +1,28 @@
-from .version import __version__, parse_version_info, version_info
+# Copyright (c) OpenMMLab. All rights reserved.
+import mmcv
 
-__all__ = ['__version__', 'version_info', 'parse_version_info']
+from .version import __version__, short_version
+
+
+def digit_version(version_str):
+    digit_version = []
+    for x in version_str.split('.'):
+        if x.isdigit():
+            digit_version.append(int(x))
+        elif x.find('rc') != -1:
+            patch_version = x.split('rc')
+            digit_version.append(int(patch_version[0]) - 1)
+            digit_version.append(int(patch_version[1]))
+    return digit_version
+
+
+mmcv_minimum_version = '1.3.15'
+mmcv_maximum_version = '1.5.0'
+mmcv_version = digit_version(mmcv.__version__)
+
+assert (mmcv_version >= digit_version(mmcv_minimum_version)
+        and mmcv_version <= digit_version(mmcv_maximum_version)), \
+    f'MMCV=={mmcv.__version__} is used but incompatible. ' \
+    f'Please install mmcv>={mmcv_minimum_version}, <={mmcv_maximum_version}.'
+
+__all__ = ['__version__', 'short_version']

mmflow/version.py

@@ -1,4 +1,7 @@
+# Copyright (c) OpenMMLab. All rights reserved.
+
 __version__ = '0.1.0'
+short_version = __version__
 
 
 def parse_version_info(version_str):

requirements/mminstall.txt

@@ -1 +1,2 @@
 mmcv-full>=1.3.15
+mmcv-full<=1.5.0