txt文件每行的元音计数

def count_vowels_in_file(file_path):
    vowels = ['a', 'e', 'i', 'o', 'u']
    with open(file_path, 'r') as file:
        lines = file.readlines()
        for line_num, line in enumerate(lines):
            vowel_count = 0
            for char in line:
                if char.lower() in vowels:
                    vowel_count += 1
            print("Line {}: {}".format(line_num+1, vowel_count))

# 调用示例
count_vowels_in_file('example.txt')