refine package version

Author: JiahangXu

nn_meter/utils/import_package.py

@@ -28,7 +28,7 @@ def try_import_torch(require_version = ["1.9.0", "1.7.1"]):
         logging.error(f'You have not install the torch package, please install torch=={require_version[0]} and try again.')
         exit()
 
-def try_import_tensorflow(require_version = ["1.15.0"]):
+def try_import_tensorflow(require_version = ["2.6.0", "1.15.0"]):
     if isinstance(require_version, str):
         require_version = [require_version]
     try:
@@ -40,7 +40,7 @@ def try_import_tensorflow(require_version = ["1.15.0"]):
         logging.error(f'You have not install the tensorflow package, please install tensorflow=={require_version[0]} and try again.')
         exit()
 
-def try_import_nni(require_version = ["2.4", "2.5"]):
+def try_import_nni(require_version = ["2.5", "2.4"]):
     if isinstance(require_version, str):
         require_version = [require_version]
     try:
@@ -49,7 +49,7 @@ def try_import_nni(require_version = ["2.4", "2.5"]):
             logging.warning(f'nni=={nni.__version__} is not well tested now, well tested version: nni=={", ".join(require_version)}' )
         return nni
     except ImportError:
-        logging.error(f'You have not install the tensorflow package, please install tensorflow=={require_version[0]} and try again.')
+        logging.error(f'You have not install the nni package, please install nni=={require_version[0]} and try again.')
         exit()
 
 def try_import_torchvision_models():