linux路径的正则表达式

^(/[^/]+)+$

import re

def is_valid_linux_path(path):
    pattern = r'^(/[^/]+)+$'
    return re.match(pattern, path) is not None

# 测试示例
paths = [
    "/home/user/documents/file.txt",  # 有效路径
    "documents/file.txt",             # 有效路径
    "/home/user//documents/file.txt", # 无效路径（连续两个斜杠）
    "home/user/documents/file.txt",   # 无效路径（缺少开头的斜杠）
]

for path in paths:
    print(f"{path}: {'有效' if is_valid_linux_path(path) else '无效'}")

import os

normalized_path = os.path.normpath("/home/user//documents/file.txt")
print(normalized_path)  # 输出: /home/user/documents/file.txt

import os

is_absolute = os.path.isabs("/home/user/documents/file.txt")
print(is_absolute)  # 输出: True

is_absolute = os.path.isabs("documents/file.txt")
print(is_absolute)  # 输出: False