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python学习笔记day1

程序员文章站 2024-01-15 15:26:46
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python学习笔记day1

今天是2020年5月20日,终于开始写博客了,小白一个,记录每一天成长,不鸣则已一鸣惊人,未来可期。

python学习笔记day1
python学习笔记day1
python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1
python2和python3有一点变化,py3可以直接识别中文,但是偏移2必须添加utf-8

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1

python学习笔记day1
python学习笔记day1
python学习笔记day1

第一天主要是对Python有个大致了解,然后学习了基础的书写语法,了解了一下基本概念,一直是在OneNote上做笔记,现在转载博客,就有点乱,算是复习了,以后如果基本上每天的内容都是在这个上面来进行做笔记了,加油!

'''
a = print(1+2+3+4+5)
b = 5
print(a*b)

a = "中文"
b = "语文"
print(a+b)

print(100)

a = input("请输入数字:")
if a < "3":
    aa = 1
    print(aa)
elif a > "8":
    aa = 2
    print(aa)
else:
    aa = 3
    print(aa)


print ("------------------------------------")

'''
'''
a = 5
b = 0

```python
while a == 5:
    print("千古李白")
    print(1230)
    print ("四月人间")
    print(456)
    b = b + 1
    print(b)
    if b == 5:
        a = 1
print("结束")
'''
'''
count = 1
sun = 0
while count <=100:
    sun = sun + count 
    count = count + 1
print (sun)

#计算1+2+3......+100
'''
#用户登录(三次机会重试)
user_name = 'admin'
password = '123456'
chance = 0
while chance < 3:
    chance += 1
    name = input("请输入用户名:")
    pw = input("请输入密码:")
    if name == user_name :
        if pw == password :
            print("登录成功!")
            break
        else:print("用户名或密码输入错误,请重新输入!")
    else: print("用户名或密码输入错误,请重新输入!")
if chance == 3:
    print("今天的登录次数用完了,请明天再来")

python学习笔记day1

#1.使用while循环输出 1 2 3 4 5 6   8 9 10
count = 0
while count < 10:
    count += 1
    if count == 7:
       continue
    print(count)
#2.求1-100的所有数的和
count = 1
sum = 0
while count <= 100:
     sum += count
     count += 1
 print(sum)
#3.输出1-100内的所有奇数
count = 0
odd = 0
while count < 50:
    odd = count * 2 + 1
    count += 1
    print(odd)
#4.输出1-100内的所有偶数
count = 0
even = 0
while count < 50:
    count += 1
    even = 2 * count
    print(even)
#5.求1-2+3-4+5-...-98+99的结果
#方案一:
count = 0
change = 0
sum = 0
while count < 99:
    count += 1
    if count % 2 == 0:
        change = -1 * count
    else:
        change = count
    sum += change
print(sum)
#方案二:
power = 1
count = 0
sum = 0
while count < 99:
    count += 1
    power += 1
    sum = sum + count*((-1)**power)
print(sum)

学习前辈初学python时候的代码,学习前辈思路,以及排版。

相关标签: python