Demo GitHub Copilot for the Command Line

# example: simple tkinter file selector and plot trigger
import tkinter as tk
from tkinter import filedialog

class App:
    def __init__(self, root):
        self.filename = None

        self.file_button = tk.Button(root, text="Select file", command=self.select_file)
        self.file_button.pack(pady=5)

        tk.Label(root, text="Number of top words:").pack()
        self.n_words = tk.Entry(root)
        self.n_words.insert(0, "20")
        self.n_words.pack()

        self.plot_button = tk.Button(root, text="Plot", command=self.plot)
        self.plot_button.pack(pady=5)

        self.plot_frame = tk.Frame(root)
        self.plot_frame.pack(fill=tk.BOTH, expand=True)

    def select_file(self):
        self.filename = filedialog.askopenfilename(
            filetypes=[("Text Files", "*.txt"), ("All Files", "*.*")]
        )

    def plot(self):
        if self.filename:
            for widget in self.plot_frame.winfo_children():
                widget.destroy()
            # Use helper functions to read, clean, and count words
            text = read_text_file(self.filename)
            words = clean_text(text)
            word_count = count_words(words)
            # ... plotting logic here ...

# ~/.bashrc
alias ghcs='gh copilot suggest'
alias ghce='gh copilot explain'

# Authenticate with GitHub CLI
gh auth login
# Example interactive flow (select HTTPS, login with web browser)

? How would you like to authenticate? Login with a web browser

! First copy your one-time code: 48F0-1714
Press Enter to open https://github.com/login/device in your browser...
✓ Authentication complete.
✓ Configured git protocol
✓ Logged in as JeremyMorgan

gh extension install github/gh-copilot

✓ Installed extension: github/gh-copilot
Welcome to GitHub Copilot in the CLI!
version 1.1.0 (2025-02-10)

gh copilot explain "chmod 777 ./test"

gh copilot explain "find . -type f -name '*.js' -mtime -7 | xargs grep 'function'"

Explanation:
• find . -type f -name '*.js' -mtime -7
  - Search for files (-type f) in the current directory (.) with a .js extension that were modified in the last 7 days.
• | xargs grep 'function'
  - Pass the file paths from find to grep, which searches each file for the string "function".

gh copilot suggest "delete a git branch locally and remotely"

? What kind of command can I help you with?
> git command

Suggestion:

git branch -d <branch>
git push origin --delete <branch>

import pygame

CENTER_X, CENTER_Y = 400, 300
STOP_LINE = {'north': 100, 'south': 500, 'east': 700, 'west': 100}
LIGHT_OFFSET = 30
LIGHT_RADIUS = 10
LIGHT_COLORS = {'green': (0, 255, 0), 'yellow': (255, 255, 0), 'red': (255, 0, 0)}

def get_light_state(direction, cycle_timer):
    # Simplified example: choose a state based on a cycle timer (0..2)
    if cycle_timer == 0:
        return 'green'
    elif cycle_timer == 1:
        return 'yellow'
    else:
        return 'red'

def draw_traffic_light(surface, direction, state):
    """
    Draws a circular traffic light for a given direction at a fixed offset
    from the intersection.
    """
    if direction == 'north':
        pos = (CENTER_X, STOP_LINE['north'] - LIGHT_OFFSET)
    elif direction == 'south':
        pos = (CENTER_X, STOP_LINE['south'] + LIGHT_OFFSET)
    elif direction == 'east':
        pos = (STOP_LINE['east'] - LIGHT_OFFSET, CENTER_Y)
    elif direction == 'west':
        pos = (STOP_LINE['west'] + LIGHT_OFFSET, CENTER_Y)
    else:
        pos = (CENTER_X, CENTER_Y)

    color = LIGHT_COLORS.get(state, (128, 128, 128))
    pygame.draw.circle(surface, color, pos, LIGHT_RADIUS)

def main():
    pygame.init()
    screen = pygame.display.set_mode((800, 600))
    pygame.display.set_caption("Traffic Light Demo")
    clock = pygame.time.Clock()
    cycle_timer = 0

    running = True
    while running:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False

        screen.fill((30, 30, 30))
        state = get_light_state('north', cycle_timer)
        draw_traffic_light(screen, 'north', state)

        pygame.display.flip()
        cycle_timer = (cycle_timer + 1) % 3
        clock.tick(1)  # slow tick for demo

    pygame.quit()