Python List

[FullStackPark-Admin]

# 1. 声明了一个变量,名字叫 classmates
# 2. 声明了一个 list
# 3. 把 list 赋值给了 classmates

classmates  = ['sunrui','wangying',"zhoujielun","caiyilin",'kunling']

# 1. 声明了一个变量 length
# 2. 通过函数 len 获取到 classmates 的长度
# 3. 将2的值,赋值给了 1

length      = len(classmates);

# 将 length 输出

print(length);

print(classmates[0]);

print(classmates[1]);

# print(classmates[2]);

classmates[0] = 'wanghao'

print(classmates[0])

# 倒数第一个

print(classmates[-1]);

totalLength = len(classmates);

totalLength = totalLength - 1 ;

print(classmates[totalLength]);

# print(classmates[-6]);

# 追加一个

classmates.append("ali");
classmates.append('tencent');
classmates.append('baidu');
classmates.append('sankuai');
classmates.append('jd');

print(len(classmates));

# 插入一个

classmates.insert(1,'google');

print(classmates[0]);
print(classmates[1]);
print(classmates[2]);

print(len(classmates));

classmates.pop();

print(len(classmates));

print((((((((((((classmates[-1]))))))))))));

classmates.pop(1);

print(classmates[0]);
print(classmates[1]);
print(classmates[2]);