《Python编程：从入门到实践》习题答案——第5章 if语句

# 5-1 条件测试：
car = 'subaru'
print(car == 'subaru')
print(car == 'audi')

num = 8
print(num > 10)
print(num < 5)

# 5-2 更多的条件测试：
# 1.检查两个字符串相等和不等
str1 = 'kan'
str2 = 'can'
print(str1 == str2)
print(str1 != str2)

# 2.使用函数lower()的测试
str1= "aaaaa"
str2 = "AAAAA"
print(str2.casefold())             
print(str2.lower())                
print(str1 == str2.casefold())
print(str1 == str2.lower())

# 3.检查两个数字相等、不等、大于、小于、大于等于和小于等于
num1 = 15
num2 = 33
print(num1 == num2)
print(num1 != num2)
print(num1 > num2)
print(num1 < num2)
print(num1 >= num2)
print(num1 <= num2)

# 4.使用关键字and和or的测试
num = 22
if (num > 20) and (num < 30):
    print(True)
else:
    print(False)

num = 66
if (num < 33) or (num > 55):
    print(True)
else:
    print(False)

# 5.测试特定的值是否包含在列表中
list = [1, 2, 3, 4, 5, 6]
if 1 in list:
    print(True)
else:
    print(False)

# 6.测试特点的值是否未包含在列表中
list = [1, 2, 3, 4, 5, 6]
if 10 not in list:
    print(True)
else:
    print(F