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RSS订阅原创 python笔记：序列
'''序列'''print([1,2,3]+[1,2,3])print((1,2,3)+(1,2,3))print('abc'+'edf')print([1,2,3]*2)print((1,2,3)*2)print('abc'*2)s=[1,2,3]print(id(s))s=s*2print(id(s))x='fishC'y='fishC'print(x is y)x=[1,2,3]y=[1,2,3]print(x is y)print('------------.
2021-08-14 15:37:21
197
原创 python笔记：字符串
'''字符串'''x='12321'y='12323'print('是回文数' if x==x[::-1] else '不是回文数')print('是回文数' if y==y[::-1] else '不是回文数')x='I love fishC'a=x.capitalize() #字符串中的首字母变成大写，其他字母变成小写b=x.casefold() #字符串所有字母小写c=x.title() #字符串中的所有单词首字母大写，其他字母小写d=x.swa.
2021-08-14 15:35:28
131
原创 python笔记：元组
'''元组'''a=(1,2,'a','b',3.14,'b')b=a[:]b=a[:3]b=a[3:]b=a[0]b=a[-1]b=a[-5]print(a,b)b=a[::-1]b=a[::2]b=a.count('b')print(b)print(a.index('b'))a=(1,2,3)b=(4,5,6)print(a+b)print(a*3)c=a,bprint(c)a=(1,2,3,4,5)b=[i * 2 for i in a]print.
2021-08-14 15:34:29
160
原创 python笔记：数组
xl=[1,3,5,6,'中华人民共和国']for each in xl: print(each)print(xl[0])print(xl[4])print(xl[-1])print(xl[-2])print(xl[0:5:1])print(xl[0:5:2])print(xl[::2])print(xl[::-1])print(xl)print(xl[::])print(xl[0:3])print(xl[3:5])print(xl[-5:-1])xl.appen.
2021-08-14 15:33:05
150
原创 python笔记：条件与循环
ii=5if 3>4: print('false')if 3<4: print('true')else: print('false')if ii>7: print('ii>7')elif ii>6: print('ii>6')elif ii>5: print('ii>5')elif ii>4: print('ii>4')else: print('else')p.
2021-08-14 15:19:37
101
原创 python笔记：数字与逻辑运算
import decimalprint(0.1+0.2)print(0.1+0.2==0.3)print(decimal.Decimal('0.1')+decimal.Decimal('0.2'))x=1+2j #复数print(x.real) #获取实数部分print(x.imag) #获取虚数部分print(0.00005) #科学计数法print(3/2)print(3//2) #底板除print(3%2) #求余数print(divmod(10,3.
2021-08-14 15:00:10
280
原创 python笔记：猜大小，随机数
'''猜大小'''import randomcs=3answer=random.randint(1,10)while cs>0: temp=input('请输入一个数字：') shuzi=int(temp) if shuzi==answer: print('恭喜，猜对了') else: if shuzi>answer: print('猜大了') else: .
2021-08-14 14:29:28
1571
原创 python笔记：变量，字符串，转义字符
"""--------------------------------------"""# 变量，字符串，转义字符x=3y=5z=100x, y,z = y, z,xprint(x, y, z)print("my demo")print('my demo2')print("let's go!")print('let\'s go!') #转义字符print('i love you!\n iloveyou') #转义换行print('d:\tuday\now')pri.
2021-08-14 14:25:42
196
原创 python学习笔记：注释
"""段注释"""# 行注释temp = input("input a number:")guess = int(temp) # 接收输入的数字if guess == 8: print("caiduiele")else: print("caicuole")print("this is my demo1")
2021-08-14 14:21:47
71
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