当我读取文件时，For循环不更新索引

with open('file.txt', 'r') as file:
    lines = file.readlines()
    for i in range(len(lines)):
        print(f"Line {i}: {lines[i].strip()}")

with open('file.txt', 'r') as file:
    lines = file.readlines()
    for i in range(len(lines)):
        print(f"Line {i}: {lines[i].strip()}")

try:
    with open('file.txt', 'r') as file:
        lines = file.readlines()
        for i in range(len(lines)):
            print(f"Line {i}: {lines[i].strip()}")
except FileNotFoundError:
    print("File not found.")
except IOError:
    print("Error reading the file.")

try:
    with open('file.txt', 'r') as file:
        lines = file.readlines()
        for i in range(len(lines)):
            print(f"Line {i}: {lines[i].strip()}")
except FileNotFoundError:
    print("File not found.")
except IOError:
    print("Error reading the file.")