Python删除字典元素
a = {'1': 1, '2':2}
# 清空字典
a.clear()
# 弹出指定key
b = a.pop('1')
# 随机弹出
b = a.popitem()
# 删除指定key
del a['1']
数组逆序
a = [1, 2, 3]
for each in a[::-1]
print(each)
a = {'1': 1, '2':2}
# 清空字典
a.clear()
# 弹出指定key
b = a.pop('1')
# 随机弹出
b = a.popitem()
# 删除指定key
del a['1']
a = [1, 2, 3]
for each in a[::-1]
print(each)
