my_list = [863, 1, 463, "pyt", 782, 241, "is", 639, 4, "fun"]

print("该列表为：")
print(my_list)

my_result = [index for index in my_list if all(str(element) == str(index)[0] for element in str(index))]

print("结果为：")
print(my_result)

该列表为：
[863, 1, 463, 'pyt', 782, 241, 'is', 639, 4, 'fun']
结果为:
[1, 4]