Steps to make Sublime Python Console which is Interactive and Reusable :
1) Install SublimeREPL plugin : 
In Top Bar > "Tools" > "Command Palette" > "Package Control: Install Package"
          Search for : "SublimeREPL" and install
2) Create Build System :
In Top Bar > "Tools" > "Build System" > "New Build System"
Replace all contents of the file with :
{
    "target": "run_existing_window_command", 
    "id": "repl_python_run",
    "file": "config/Python/Main.sublime-menu"
}
Save the file as "PythonRepl.sublime-build" in the default "user" folder. 
3) Settings to make Console interactive and Reusable:
|=>    Goto "Preferences" > "Browse Packages"
|=>    Goto Folder : SublimeRepl
|=>    Edit : sublimerepl.py
Replace : if view.id() == view_id
With    : if view.name() == view_id:
|=>    Goto Folder : SublimeRepl/config/Python
|=>    Edit : Main.sublime-menu
|=> Under "caption": "Python - RUN current file"
|=> Append : "-i", in "cmd" as : 
        "cmd": ["python", "-u", "$file_basename"],
        "cmd": ["python", "-i", "-u", "$file_basename"],
|=> Add : Before "external_id": "python"
        "view_id": "*REPL* [python]",
|=> Full Code as shown below :
    --------------------------------------------------
    {"command": "repl_open",
     "caption": "Python - RUN current file",
     "id": "repl_python_run",
     "mnemonic": "R",
     "args": {
        "type": "subprocess",
        "encoding": "utf8",
        "cmd": ["python", "-i", "-u", "$file_basename"],
        "cwd": "$file_path",
        "syntax": "Packages/Python/Python.tmLanguage",
        "view_id": "*REPL* [python]",
        "external_id": "python",
        "extend_env": {"PYTHONIOENCODING": "utf-8"}
        }
    },
4) Using  :
4.1) Open the Python file that you want to run in Sublime Text.
4.2) In Top Bar > "Tools" > "Build System" > "PythonRepl".
4.3) Build the Python file, by choosing In Top Bar > "Tools" > "Build"
      or 
      Using either the build shortcut (Ctrl+B for Windows, or ⌘ Command+B for Mac)