[Enhance]: add version assert (#129)

* Add version assert in init file.

* update mmcv requirement
Co-authored-by: zhangwenwei <wayne.zw@outlook.com>

docs/install.md

@@ -81,8 +81,8 @@ pip install -v -e .  # or "python setup.py develop"
 
 | MMDetection3D version | MMDetection version |    MMCV version     |
 |:-------------------:|:-------------------:|:-------------------:|
-| master              | mmdet>=2.4.0        | mmcv-full>=1.1.1, <=1.2|
-| 0.6.0               | mmdet>=2.4.0        | mmcv-full>=1.1.1, <=1.2|
+| master              | mmdet>=2.4.0        | mmcv-full>=1.1.3, <=1.2|
+| 0.6.0               | mmdet>=2.4.0        | mmcv-full>=1.1.3, <=1.2|
 | 0.5.0               | 2.3.0               | mmcv-full==1.0.5|
 
 

mmdet3d/__init__.py

+import mmcv
+
+import mmdet
 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 = '1.1.3'
+mmdet_maximum_version = '1.2'
+mmcv_version = digit_version(mmcv.__version__)
+
+
+assert (mmcv_version >= digit_version(mmcv_minimum_version)
+        and mmcv_version <= digit_version(mmdet_maximum_version)), \
+    f'MMCV=={mmcv.__version__} is used but incompatible. ' \
+    f'Please install mmcv>={mmcv_minimum_version}, <={mmdet_maximum_version}.'
+
+mmdet_minimum_version = '2.4.0'
+mmdet_maximum_version = '2.4.0'
+mmdet_version = digit_version(mmdet.__version__)
+assert (mmdet_version >= digit_version(mmdet_minimum_version)
+        and mmdet_version <= digit_version(mmdet_maximum_version)), \
+    f'MMDET=={mmdet.__version__} is used but incompatible. ' \
+    f'Please install mmdet>={mmdet_minimum_version}, ' \
+    f'<={mmdet_maximum_version}.'
+
 __all__ = ['__version__', 'short_version']