Make python_server.py compatible to Python 3.7

[T-256]

2024-10-05 15:12:00.813 [error]   File "c:\Users\User\.vscode\extensions\ms-python.python-2024.16.0-win32-x64\python_files\python_server.py", line 162
    while line := STDIN.readline().strip():
                ^
SyntaxError: invalid syntax

2024-10-05 15:12:00.816 [error] Python server exited with code 1
2024-10-05 15:14:46.427 [error] Error getting response from REPL server: [k [Error]: Connection is closed.
	at pe (c:\Users\User\.vscode\extensions\ms-python.python-2024.16.0-win32-x64\out\client\extension.js:2:2053423)
	at Object.sendRequest (c:\Users\User\.vscode\extensions\ms-python.python-2024.16.0-win32-x64\out\client\extension.js:2:2055781)
	at g.executeCode (c:\Users\User\.vscode\extensions\ms-python.python-2024.16.0-win32-x64\out\client\extension.js:2:799948)
	at g.execute (c:\Users\User\.vscode\extensions\ms-python.python-2024.16.0-win32-x64\out\client\extension.js:2:799770)
	at u.value (c:\Users\User\.vscode\extensions\ms-python.python-2024.16.0-win32-x64\out\client\extension.js:2:829806)
	at i.executeHandler (c:\Users\User\.vscode\extensions\ms-python.python-2024.16.0-win32-x64\out\client\extension.js:2:805190)
	at bb.$executeCells (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:155:24084)
	at Zb.S (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:31:113896)
	at Zb.Q (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:31:113676)
	at Zb.M (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:31:112765)
	at Zb.L (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:31:111870)
	at gh.value (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:31:110667)
	at T.B (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:29:732)
	at T.fire (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:29:950)
	at no.fire (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:31:9399)
	at gh.value (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:174:13273)
	at T.B (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:29:732)
	at T.fire (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:29:950)
	at no.fire (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:31:9399)
	at MessagePortMain.<anonymous> (file:///c:/Users/User/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:174:11562)
	at MessagePortMain.emit (node:events:519:28)
	at MessagePortMain._internalPort.emit (node:electron/js2c/utility_init:2:2619)] {
  code: 1
}

[T-256]

Verified it solves the issue.

[anthonykim1]

Thanks for the contribution. I appreciate this addition, and hope this will make better extension better compatible with 3.7, but please note that this won't guarantee full compatibility nor support for Python3.7 in other parts of the extension. The minimum Python version we support would be 3.8.