Addition of devcontainer for vscode

.devcontainer/Dockerfile

@@ -0,0 +1,22 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.134.0/containers/python-3/.devcontainer/base.Dockerfile
+ARG VARIANT="3"
+FROM mcr.microsoft.com/vscode/devcontainers/python:0-${VARIANT}
+
+# [Optional] Allow the vscode user to pip install globally w/o sudo
+ENV PIP_TARGET=/usr/local/pip-global
+ENV PYTHONPATH=${PIP_TARGET}:${PYTHONPATH}
+ENV PATH=${PIP_TARGET}/bin:${PATH}
+RUN mkdir -p ${PIP_TARGET} \
+    && chown vscode:root ${PIP_TARGET} \
+    && echo "if [ \"\$(stat -c '%U' ${PIP_TARGET})\" != \"vscode\" ]; then chown -R vscode:root ${PIP_TARGET}; fi" \
+        | tee -a /root/.bashrc /home/vscode/.bashrc /root/.zshrc >> /home/vscode/.zshrc 
+
+# [Optional] If your pip requirements rarely change, uncomment this section to add them to the image.
+COPY requirements.txt /tmp/pip-tmp/
+RUN pip3 --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
+    && rm -rf /tmp/pip-tmp
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update \
+#     && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>

.devcontainer/devcontainer.json

@@ -0,0 +1,42 @@
+// For format details, see https://aka.ms/vscode-remote/devcontainer.json or this file's README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.134.0/containers/python-3
+{
+  "name": "Python 3",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": "..",
+    // Update 'VARIANT' to pick a Python version: 3, 3.6, 3.7, 3.8 
+    "args": { "VARIANT": "3.9" }
+  },
+
+  // Set *default* container specific settings.json values on container create.
+  "settings": {
+    "terminal.integrated.shell.linux": "/bin/bash",
+    "python.pythonPath": "/usr/local/bin/python",
+    "python.linting.enabled": true,
+    "python.linting.pylintEnabled": true,
+    "python.formatting.autopep8Path": "/usr/local/py-utils/bin/autopep8",
+    "python.formatting.blackPath": "/usr/local/py-utils/bin/black",
+    "python.formatting.yapfPath": "/usr/local/py-utils/bin/yapf",
+    "python.linting.banditPath": "/usr/local/py-utils/bin/bandit",
+    "python.linting.flake8Path": "/usr/local/py-utils/bin/flake8",
+    "python.linting.mypyPath": "/usr/local/py-utils/bin/mypy",
+    "python.linting.pycodestylePath": "/usr/local/py-utils/bin/pycodestyle",
+    "python.linting.pydocstylePath": "/usr/local/py-utils/bin/pydocstyle",
+    "python.linting.pylintPath": "/usr/local/py-utils/bin/pylint"
+  },
+
+  // Add the IDs of extensions you want installed when the container is created.
+  "extensions": [
+    "ms-python.python"
+  ],
+
+  // Use 'forwardPorts' to make a list of ports inside the container available locally.
+  "forwardPorts": [ 9000 ],
+
+  // Use 'postCreateCommand' to run commands after the container is created.
+  "postCreateCommand": "pip3 install -r requirements.txt",
+
+  // Comment out to connect as root instead.
+  "remoteUser": "vscode"
+}

sungrowinverter/configs/string.py

@@ -3,7 +3,7 @@
 # Sungrow Grid Connect String Inverter Series
 #
 # Valid device types:
-#   SG3.0RT, SG4.0RT, SG5.0RT, SG6.0RT, SG7.0RT，SG8.0RT, SG10RT, SG12RT, SG15RT, SG17RT, SG20RT
+#   SG3.0RT, SG4.0RT, SG5.0RT, SG6.0RT, SG7.0RT, SG8.0RT, SG10RT, SG12RT, SG15RT, SG17RT, SG20RT
 #   SG30KTL-M, SG30KTL-M-V31, SG33KTL-M, SG36KTL-M, SG33K3J, SG49K5J, SG34KJ, LP_P34KSG,
 #   SG50KTL-M-20, SG60KTL, G80KTL, SG80KTL-20, SG60KU-M
 #   SG5KTL-MT, SG6KTL-MT, SG8KTL-M, SG10KTL-M, SG10KTL-MT, SG12KTL-M, SG15KTL-M,