python纯终端实现图片查看器（全彩）（windows）

很多人作为命令行爱好者，无法在终端内直接查看图片是无法忍受的，

那就写一个！

先直接上代码

import os
import sys
from PIL import Image
import numpy as np
import colorama
import msvcrt  # Windows专用# 初始化colorama
colorama.init()# 更丰富的字符梯度，用于更好的放大效果chars = [" ", "░", "▒", "▓", "█", "▀", "▄", "▌", "▐", "■", "◢", "◣", "◤", "◥", "◧", "◨", "◩", "◪", "◫"]def clear_screen():"""清屏"""os.system('cls' if os.name == 'nt' else 'clear')def image_to_ansiart(image_path, width=80, scale=1.0):"""将图片转换为ANSI彩色字符画，支持平滑缩放"""try:img = Image.open(image_path)except Exception as e:return f"[无法加载图片: {str(e)}]"# 应用缩放因子width = int(width * scale)aspect_ratio = img.height / img.widthheight = int(width * aspect_ratio * 0.45)  # 调整高宽比以获得更好显示效果# 确保最小尺寸width = max(10, width)  # 最小宽度设为10height = max(5, height)  # 最小高度设为5# 使用高质量缩放img = img.resize((width, height), Image.Resampling.LANCZOS)img = img.convert("RGB")pixels = np.array(img)ansi_lines = []for row in pixels:line = []for pixel in row:r, g, b = pixelbrightness = 0.299 * r + 0.587 * g + 0.114 * b# 选择字符，使用更精细的亮度分级char_idx = int(brightness / 255 * (len(chars) - 1))char = chars[char_idx]# 使用24位真彩色line.append(f"\x1b[38;2;{r};{g};{b}m{char}")ansi_lines.append("".join(line) + "\x1b[0m")return "\n".join(ansi_lines)def get_terminal_size():"""获取终端大小"""try:from shutil import get_terminal_size as gtsreturn gts().columns, gts().linesexcept:return 80, 24  # 默认值def get_image_list(start_image=None):"""获取当前目录图片列表，并定位到指定图片"""images = sorted([f for f in os.listdir() if f.lower().endswith(('.png', '.jpg', '.jpeg', '.bmp', '.gif', '.webp'))])if not images:print("当前目录没有图片文件(支持.png/.jpg/.jpeg/.bmp/.gif/.webp)")return None, -1# 如果指定了初始图片，尝试定位idx = 0if start_image:start_image = os.path.basename(start_image)  # 只取文件名部分try:idx = images.index(start_image)except ValueError:# 如果文件不在当前目录，添加到列表并设为当前图片if os.path.exists(start_image):images.append(start_image)images.sort()idx = images.index(start_image)else:print(f"警告: 指定的图片文件 {start_image} 不存在")return images, idxdef main():# 处理命令行参数start_image = sys.argv[1] if len(sys.argv) > 1 else None# 获取图片列表和初始索引images, idx = get_image_list(start_image)if not images:returnscale = 1.0base_width = min(80, get_terminal_size()[0] - 10)  # 根据终端宽度调整while True:clear_screen()# 显示图片信息和控制说明print(f"图片查看器: {images[idx]} ({idx+1}/{len(images)}) 缩放: {scale:.1f}x")print("← →:切换图片 | + -:缩放(0.2x-5.0x) | Home/End:首图/末图 | Q:退出")print("-" * min(80, get_terminal_size()[0]))try:# 显示图片art = image_to_ansiart(images[idx], base_width, scale)print(art)except Exception as e:print(f"渲染错误: {str(e)}")# 获取按键key = msvcrt.getch()try:key = key.decode('utf-8').lower()except:key = str(key)# 处理按键if key == 'q':breakelif key == '+' and scale < 5.0:scale = min(5.0, scale + 0.1)  # 更精细的缩放控制elif key == '-' and scale > 0.2:scale = max(0.2, scale - 0.1)elif key == '\x00' or key == '\xe0':  # 功能键前缀next_key = msvcrt.getch()if next_key == b'M' or next_key == b'P':  # 右箭头或下箭头idx = (idx + 1) % len(images)scale = 1.0elif next_key == b'K' or next_key == b'H':  # 左箭头或上箭头idx = (idx - 1) % len(images)scale = 1.0elif next_key == b'G':  # Home键idx = 0scale = 1.0elif next_key == b'O':  # End键idx = len(images) - 1scale = 1.0elif key == '\r':  # 回车键重置缩放scale = 1.0elif key == 'f':  # 切换全屏/正常模式base_width = get_terminal_size()[0] - 10 if base_width < 100 else 80if __name__ == "__main__":try:main()except KeyboardInterrupt:passexcept Exception as e:print(f"程序出错: {str(e)}")finally:# 重置终端print("\x1b[0m")  # 重置所有属性colorama.deinit()

运行：

python viewer.py myphoto.jpg

直接

python viewer.py

也可以 

 效果图：

 -和+可以放大缩小

（提示：windows终端 ctrl + 放大字体，ctrl - 缩小字体，缩小字体效果更佳）