Bump Python>=3.8.0 (#11971)

.github/workflows/greetings.yml

@@ -31,7 +31,7 @@ jobs:
 
             ## Requirements
 
-            [**Python>=3.7.0**](https://www.python.org/) with all [requirements.txt](https://github.com/ultralytics/yolov5/blob/master/requirements.txt) installed including [**PyTorch>=1.8**](https://pytorch.org/get-started/locally/). To get started:
+            [**Python>=3.8.0**](https://www.python.org/) with all [requirements.txt](https://github.com/ultralytics/yolov5/blob/master/requirements.txt) installed including [**PyTorch>=1.8**](https://pytorch.org/get-started/locally/). To get started:
             ```bash
             git clone https://github.com/ultralytics/yolov5  # clone
             cd yolov5

README.zh-CN.md

@@ -72,7 +72,7 @@ pip install ultralytics
 <details open>
 <summary>安装</summary>
 
-克隆 repo，并要求在 [**Python>=3.7.0**](https://www.python.org/) 环境中安装 [requirements.txt](https://github.com/ultralytics/yolov5/blob/master/requirements.txt) ，且要求 [**PyTorch>=1.8**](https://pytorch.org/get-started/locally/) 。
+克隆 repo，并要求在 [**Python>=3.8.0**](https://www.python.org/) 环境中安装 [requirements.txt](https://github.com/ultralytics/yolov5/blob/master/requirements.txt) ，且要求 [**PyTorch>=1.8**](https://pytorch.org/get-started/locally/) 。
 
 ```bash
 git clone https://github.com/ultralytics/yolov5  # clone

utils/general.py

@@ -381,7 +381,7 @@ def check_git_info(path='.'):
         return {'remote': None, 'branch': None, 'commit': None}
 
 
-def check_python(minimum='3.7.0'):
+def check_python(minimum='3.8.0'):
     # Check current python version vs. required python version
     check_version(platform.python_version(), minimum, name='Python ', hard=True)