标签:image div gbk 括号 编码 你好 解码 class col
a += 20 # a = a+20
逻辑运算:
print(3 > 4 or 4 < 3 and 1 == 1) # False print(1 < 2 and 3 < 4 or 1 > 2) # True print(2 > 1 and 3 < 4 or 4 > 5 and 2 < 1) # True print(1 > 2 and 3 < 4 or 4 > 5 and 2 > 1 or 9 < 8) # False print(1 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6) # False print(not 2 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6) # False
x or y 如果x==0 那么就是y, 否则是x
x and y, x为真,值是y,x为假,值是x
false相当于0
print(1 or 2) # 1 print(2 or 3) # 2 print(0 or 3) # 3 print(0 or 4) # 4 print(0 or 1 or 3 or 0 or 5) # 1 print(1 and 2) # 2 print(2 and 0) # 0 print(0 and 3) # 0 print(0 and 4) # 0 print(0 or 4 and 3 or 7 or 9 and 6) # 3 print(2 > 3 and 3) # False false相当于0 print(2 < 1 and 4 > 6 or 3 and 4 > 5 or 6) # 6
a = "你好" a_new = a.decode("utf-8").encode("gbk") # 第一个里填原来字符串的编码格式(原来的为utf-8),第二个填要转为的格式
decode 解码 encode 编码
abc = ‘西安‘ print(abc.encode(‘utf-8‘)) print(‘邹邹‘.encode(‘utf-8‘)) # 转换为二进制 print(b‘\xe4\xbd\xa0\xe5\xa5\xbd‘.decode(‘utf-8‘)) # 转换为字符串
结果:
b‘\xe8\xa5\xbf\xe5\xae\x89‘ b‘\xe9\x82\xb9\xe9\x82\xb9‘ 你好
如果将字符串赋给了abc,则输出时不用引号,没赋值时需要引号。Utf-8必须有引号。二进制转换为字符串不要引号。
标签:image div gbk 括号 编码 你好 解码 class col
原文地址:https://www.cnblogs.com/zouzou-busy/p/12989793.html