错误描述：
最近微智启软件工作室在安装yolov5环境依赖的时候，发现不管怎么安装都不行。
pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple/安装的环境依赖如下：
# YOLOv5 requirements
# Usage: pip install -r requirements.txt
# Base ------------------------------------------------------------------------
gitpython>=3.1.30
matplotlib>=3.3
numpy>=1.23.5
opencv-python>=4.1.1
pillow>=10.3.0
psutil # system resources
PyYAML>=5.3.1
requests>=2.32.2
scipy>=1.4.1
thop>=0.1.1 # FLOPs computation
torch>=1.8.0 # see https://pytorch.org/get-started/locally (recommended)
torchvision>=0.9.0
tqdm>=4.66.3
ultralytics>=8.2.34 # https://ultralytics.com
# protobuf<=3.20.1 # https://github.com/ultralytics/yolov5/issues/8012
# Logging ---------------------------------------------------------------------
# tensorboard>=2.4.1
# clearml>=1.2.0
# comet
# Plotting --------------------------------------------------------------------
pandas>=1.1.4
seaborn>=0.11.0
# Export ----------------------------------------------------------------------
# coremltools>=6.0 # CoreML export
# onnx>=1.10.0 # ONNX export
# onnx-simplifier>=0.4.1 # ONNX simplifier
# nvidia-pyindex # TensorRT export
# nvidia-tensorrt # TensorRT export
# scikit-learn<=1.1.2 # CoreML quantization
# tensorflow>=2.4.0,<=2.13.1 # TF exports (-cpu, -aarch64, -macos)
# tensorflowjs>=3.9.0 # TF.js export
# openvino-dev>=2023.0 # OpenVINO export
# Deploy ----------------------------------------------------------------------
setuptools>=70.0.0 # Snyk vulnerability fix
# tritonclient[all]~=2.24.0
# Extras ----------------------------------------------------------------------
# ipython # interactive notebook
# mss # screenshots
# albumentations>=1.0.3
# pycocotools>=2.0.6 # COCO mAP安装报错信息如下：
(yolo5) E:\code\v5>pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple/
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple/
Collecting gitpython>=3.1.30 (from -r requirements.txt (line 5))
ERROR: HTTP error 403 while getting https://pypi.tuna.tsinghua.edu.cn/packages/e9/bd/cc3a402a6439c15c3d4294333e13042b915bbeab54edc457c723931fed3f/GitPython-3.1.43-py3-none-any.whl (from https://pypi.tuna.tsinghua.edu.cn/simple/gitpython/) (requires-python:>=3.7)
ERROR: Could not install requirement gitpython>=3.1.30 from https://pypi.tuna.tsinghua.edu.cn/packages/e9/bd/cc3a402a6439c15c3d4294333e13042b915bbeab54edc457c723931fed3f/GitPython-3.1.43-py3-none-any.whl (from -r requirements.txt (line 5)) because of HTTP error 403 Client Error: Forbidden for url: https://pypi.tuna.tsinghua.edu.cn/packages/e9/bd/cc3a402a6439c15c3d4294333e13042b915bbeab54edc457c723931fed3f/GitPython-3.1.43-py3-none-any.whl for URL https://pypi.tuna.tsinghua.edu.cn/packages/e9/bd/cc3a402a6439c15c3d4294333e13042b915bbeab54edc457c723931fed3f/GitPython-3.1.43-py3-none-any.whl (from https://pypi.tuna.tsinghua.edu.cn/simple/gitpython/) (requires-python:>=3.7)
从图中的报错提示，要求版本需要大于3.7，可我的版本是3.8完全满足的。
解决方案：
更换下载源就行，我默认用的清华源，可能它里面没有符合的版本，我换成了阿里云镜像源
pip install -r requirements.txt -i https://mirrors.aliyun.com/pypi/simple/
