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This commit is contained in:
陈银军
2026-04-14 17:58:12 +08:00
parent ed2c79403b
commit 531a5b4f27
4 changed files with 0 additions and 34 deletions
@@ -1,13 +0,0 @@
c = [1,2,3,'1',True,2.1]
# 变量[起始下标:结束下标]
# 如果下标从0开始可以省略不写,例如 n = l[:4]
# 如果结束下标取的是最后一个元素,可以省略不写,例如 n = l[3:]
# 如果列表中的元素都要,开始和结束下标都可以省略,例如 n = l[:]
# n = l[:-1] 表示从0开始 - 到数二个元素
print(c[0:4])
print(c[:4])
print('-------------------------')
print(c[0:])
print('-------------------------')
print(c[:7])
print(c[:10])
@@ -1,9 +0,0 @@
l = [1,2,3,4,5,6,7,8,9]
# list[start:stop:step]
print(l[::2])
print('-------------')
print(l[::3])
print('-------------')
print(l[::4])
print('-------------')
@@ -1,9 +0,0 @@
l = [1, 2,3,4,5,6,7,8,9]
# list[start:stop:step]
print(l[::-2])
print('-------------')
print(l[::-3])
print('-------------')
print(l[::-4])
print('-------------')
@@ -1,3 +0,0 @@
b2 = [1,2,3]
b1 = [4,5,6]
print(b1+b2)