元组列表字典（莫烦python基础）

a_tuple = (12, 3, 5, 15 , 6)
another_tuple = 12, 3, 5, 15 , 6

a_list = [12, 3, 67, 7, 82]

for content in a_list:
  print(content)
"""
12
3
67
7
82
"""
 
for content_tuple in a_tuple:
  print(content_tuple)
"""
12
3
5
15
6
"""

for index in range(len(a_list)):
  print("index = ", index, ", number in list = ", a_list[index])
"""
index = 0 , number in list = 12
index = 1 , number in list = 3
index = 2 , number in list = 67
index = 3 , number in list = 7
index = 4 , number in list = 82
"""
 
for index in range(len(a_tuple)):
  print("index = ", index, ", number in tuple = ", a_tuple[index])
"""
index = 0 , number in tuple = 12
index = 1 , number in tuple = 3
index = 2 , number in tuple = 5
index = 3 , number in tuple = 15
index = 4 , number in tuple = 6
"""

a = [1,2,3,4,1,1,-1]
a.append(0) # 在a的最后面追加一个0
print(a)
# [1, 2, 3, 4, 1, 1, -1, 0]

a = [1,2,3,4,1,1,-1]
a.insert(1,0) # 在位置1处添加0
print(a)
# [1, 0, 2, 3, 4, 1, 1, -1]

a = [1,2,3,4,1,1,-1]
a.remove(2) # 删除列表中第一个出现的值为2的项
print(a)
# [1, 3, 4, 1, 1, -1]

a = [1,2,3,4,1,1,-1]
print(a[0]) # 显示列表a的第0位的值
# 1
 
print(a[-1]) # 显示列表a的最末位的值
# -1
 
print(a[0:3]) # 显示列表a的从第0位 到 第2位(第3位之前) 的所有项的值
# [1, 2, 3]
 
print(a[5:]) # 显示列表a的第5位及以后的所有项的值
# [1, -1]
 
print(a[-3:]) # 显示列表a的倒数第3位及以后的所有项的值
# [1, 1, -1]

a = [1,2,3,4,1,1,-1]
print(a.index(2)) # 显示列表a中第一次出现的值为2的项的索引
# 1
print(a.count(-1))
# 1

a = [4,1,2,3,4,1,1,-1]
a.sort() # 默认从小到大排序
print(a)
# [-1, 1, 1, 1, 2, 3, 4, 4]
 
a.sort(reverse=True) # 从大到小排序
print(a)
# [4, 4, 3, 2, 1, 1, 1, -1]
 

a = [1,2,3,4,5] # 一行五列
 
multi_dim_a = [[1,2,3],
			  [2,3,4],
			  [3,4,5]] # 三行三列

print(a[1])
# 2
 
print(multi_dim_a[0][1])
# 2

a_list = [1,2,3,4,5,6,7,8]
 
d1 = {'apple':1, 'pear':2, 'orange':3}
d2 = {1:'a', 2:'b', 3:'c'}
d3 = {1:'a', 'b':2, 'c':3}
 
print(d1['apple']) # 1
print(a_list[0])  # 1
 
del d1['pear']
print(d1)  # {'orange': 3, 'apple': 1}
 
d1['b'] = 20
print(d1)  # {'orange': 3, 'b': 20, 'pear': 2, 'apple': 1}

def func():
  return 0
 
d4 = {'apple':[1,2,3], 'pear':{1:3, 3:'a'}, 'orange':func}
print(d4['pear'][3])  # a