python學習第3周（1）

#5-2
str1 = "String"
str2 = "string"
print(str1 == str2)
print(str1 != str2)
print(str1.lower() == str2.lower())
print(str1.lower() != str2.lower())
print(4 == 5)
print(4 != 5)
print(4 > 5)
print(4 < 5)
print(4 >= 5)
print(4 <= 5)
print(str1 == str2 and str1 != str2)
print(str1 == str2 or str1 != str2)
print(4 in list(range(1,6)))
print(4 not in list(range(1,6)))


#5-6
age = 20
if age < 2 :
print("He is a baby")
elif age >= 2 and age < 4:
print("He is a learning to walk")
elif age >= 4 and age < 13:
print("He is a child")
elif age >= 13 and age < 20:
print("He is a teenager")
elif age >= 20 and age < 65:
print("He is an adult")
elif age >= 65:
print("He is an old man")


#5-7
favorite_fruits = ["apple", "banana", "orange"]
if "apple" in favorite_fruits:
print("You really like apples!")
print("You really like pears!") if "pear" in favorite_fruits else "pear"
print("You really like bananas!") if "banana" in favorite_fruits else "pear"
print("You really like oranges!") if "orange" in favorite_fruits else "pear"
print("You really like peachs!") if "pear" in favorite_fruits else "pear"


#5-11
nums = list(range(1,10))
for num in nums:
if num == 1:
print("1st")
elif num == 2:
print("2nd")
elif num == 3:
print("3rd")
else :
print(str(num) + "th")