如何从文本文件中获取多个坐标？

# 1. 读取文本文件
with open('coordinates.txt', 'r') as file:
    lines = file.readlines()

coordinates = []

# 2. 解析文本内容
for line in lines:
    # 假设每行的格式为"x,y"
    x, y = line.strip().split(',')
    coordinates.append((float(x), float(y)))

# 3. 存储坐标数据
print(coordinates)

# 4. 处理多个坐标
# 示例：计算第一个坐标和其他坐标之间的距离
import math

def distance(coord1, coord2):
    x1, y1 = coord1
    x2, y2 = coord2
    return math.sqrt((x2 - x1)**2 + (y2 - y1)**2)

distances = []
for i in range(1, len(coordinates)):
    dist = distance(coordinates[0], coordinates[i])
    distances.append(dist)

print(distances)