在这里,我们正在实现一个python程序来检查列表中的所有元素是否相同?
我们可以使用[1:]和[:-1]比较给定列表中的所有元素。
程序:
# 检查元素的功能 def check_equal(a): return a[1:] == a[:-1] # 列表 x = [10, 20, 30, 40,50] y = [10, 20, 20, 20, 20] z = [10, 10, 10, 10, 10] # 检查[1:]和[:-1]如何工作? print("x: ", x) print("x[1:]: ", x[1:]) print("x[:-1]: ", x[:-1]) print("check_equal(x): ",check_equal(x))print()print("y: ", y) print("y[1:]: ", y[1:]) print("y[:-1]: ", y[:-1]) print("check_equal(y): ",check_equal(y))print()print("z: ", z) print("z[1:]: ", z[1:]) print("z[:-1]: ", z[:-1]) print("check_equal(z): ",check_equal(z))print()
输出结果
x: [10, 20, 30, 40, 50] x[1:]: [20, 30, 40, 50] x[:-1]: [10, 20, 30, 40]check_equal(x): False y: [10, 20, 20, 20, 20] y[1:]: [20, 20, 20, 20] y[:-1]: [10, 20, 20, 20]check_equal(y): False z: [10, 10, 10, 10, 10] z[1:]: [10, 10, 10, 10] z[:-1]: [10, 10, 10, 10]check_equal(z): True