'''
@Author: your name
@Date: 2020-07-15 22:44:09
@LastEditTime: 2020-07-15 23:18:43
@LastEditors: Please set LastEditors
@Description: In User Settings Edit
@FilePath: \vscode_py\day10.py
'''

# Question 31 
# 计算1-20的平方，存放在字典中，并输出
def Question31():
    d={}
    for i in range(1,21):
        d[i]=i**2
    print(d)


# Question 32
# 计算1-20的平方，存放在字典中，并输出keys
def Question32():
    d={}
    for i in range(1,21):
        d[i]=i**2
    # for i in d.keys():
    #     print(i) 
    print(d.keys())

# Question33
# 计算1-20的平方，存放在list
def Question33():
    l=[]
    for i in range(1,21):
        l.append(i**2)
    print(l)

# Question34
# 计算1-20的平方，存放在list,输出前5个元素
def Question34():
    l=[]
    for i in range(1,21):
        l.append(i**2)
    print(l[:5])

# Question35
# 计算1-20的平方，存放在list,输出后5个元素
def Question35():
    l=[]
    for i in range(1,21):
        l.append(i**2)
    print(l[-5:])


# Question36
# 计算1-20的平方，存放在list,输出除掉前5个元素的所有元素
def Question36():
    l=[]
    for i in range(1,21):
        l.append(i**2)
    print(l[5:])


# Question37
# 计算1-20的平方，存放在list,输出tuple
def Question37():
    l=[]
    for i in range(1,21):
        l.append(i**2)
    l=tuple(l)
    print(l)


if __name__ == "__main__":
    # Question31()

    # Question32()

    # Question33()

    # Question34()

    # Question35()

    # Question36()

    Question37()