# 元组的初始化
a = (1, 2, 3)
b = ('1', [2, 3])
c = ('1', '2', (3, 4))
d = ()
e = (1,) # 元组中只有一个元素时，需要使用逗号结尾
print(a, b, c, d, e)
# (1, 2, 3) ('1', [2, 3]) ('1', '2', (3, 4)) () (1,)
# 下标获取值
print(a[1]) # 2
# 元组合并
print(a+b) # (1, 2, 3, '1', [2, 3])
# 内建函数使用
# 元组长度
print(len(a)) # 3
# 使用 * 是复制指针
f = a*2
print(f) # (1, 2, 3, 1, 2, 3)
print(id(f[0])) # 4376435920
print(id(a[0])) # 4376435920
print(id(f[3])) # 4376435920
# 无法更新编辑
# a[0] = 1
# Traceback (most recent call last):
# File "/Users/deanwu/projects/01_LearnDocs/learn_codes/python/python_list.py", line 15, in <module>
# a[0] = 1
# TypeError: 'tuple' object does not support item assignment
# 无法删除
# del a[0]
# Traceback (most recent call last):
# File "/Users/deanwu/projects/01_LearnDocs/learn_codes/python/python_list.py", line 21, in <module>
# del a[0]
# TypeError: 'tuple' object doesn't support item deletion
