热，从左到右比较字符串值

# 基本字符串比较
str1 = "apple"
str2 = "banana"
str3 = "apple"

print(str1 < str2)  # True，因为 'a' < 'b'
print(str1 == str3) # True，完全相同

# 忽略大小写的比较
str4 = "Apple"
str5 = "apple"

print(str4.lower() == str5.lower())  # True，忽略大小写后相等

str_a = "你好".encode('utf-8')
str_b = "你好".encode('gbk')

# 错误的比较方式
print(str_a == str_b)  # 可能会返回False

# 正确的方式：先解码再比较
print(str_a.decode('utf-8') == str_b.decode('gbk'))  # True

import re

def clean_string(s):
    return re.sub(r'\s+', '', s)  # 去除所有空白字符

str_x = "hello\tworld"
str_y = "helloworld"

print(clean_string(str_x) == clean_string(str_y))  # True