《Python编程：从入门到实践》第五章 if语句 习题答案

#5.1
major = \'Software Engineering\'
print("Is major ==\'Software Engineering\'? I predict True.")
print(major==\'Software Engineering\')

print("Is major ==\'Software Engineering\'? I predict False.")
print(major==\'Computer Science\')
#5.2
print("--------------------------------------")
string_1=\'abc\'
string_2=\'abc\'
string_3=\'abcd\'
print("Is string_1==string_2? ")
print(string_1==string_2)
print("Is string_2==string_3?")
print(string_2==string_3)
print("--------------------------------------")
print("Is string_1 == string_1.lower()?")
print(string_1==string_1.lower())
print("--------------------------------------")
print("这个部分实在过于简单和麻烦，略过！")
print("--------------------------------------")
print(True and False)
print(True and True)
print(False and False)
print(True or False)
print(True or True)
print(False or False)
print("--------------------------------------")
mobileInc = [\'apple\',\'xiaomi\',\'huawei\',\'oppo\',\'vivo\']
print(\'apple\' in mobileInc)
print(\'coolpad\' in mobileInc)
print(\'nokia\' not in mobileInc)

#5.3
alien_color = \'green\'
if alien_color == \'green\':
    print("Great!You got 5 point!")
alien_color = \'red\'
if alien_color == \'green\':
    print("Great!You got 5 point!")
print("------------------------------------")
#5.4
alien_color = \'green\'
if alien_color == \'green\':
    print("Great!You got 5 point!")
else:
    print("Excellent!You got 10 point!")
alien_color = \'red\'
if alien_color == \'green\':
    print("Great!You got 5 point!")
else:
    print("Excellent!You got 10 point!")
print("-----------------------------------------")
#5.5
alien_color = \'green\'
if alien_color == \'green\':
    print("Great!You got 5 point!")
elif alien_color == \'yellow\':
    print("Excellent!You got 10 point!")
elif alien_color == \'red\':
    print("Oh,my god!You got 15 point!")


alien_color = \'yellow\'
if alien_color == \'green\':
    print("Great!You got 5 point!")
elif alien_color == \'yellow\':
    print("Excellent!You got 10 point!")
elif alien_color == \'red\':
    print("Oh,my god!You got 15 point!")


alien_color = \'red\'
if alien_color == \'green\':
    print("Great!You got 5 point!")
elif alien_color == \'yellow\':
    print("Excellent!You got 10 point!")
elif alien_color == \'red\':
    print("Oh,my god!You got 15 point!")
print("-----------------------------------------")

#5.6
age = 33
if age < 2:
    print("婴儿")
elif age>=2 and age<4:
    print("蹒跚学步")
elif age>=4 and age<13:
    print("儿童")
elif age>=13 and age<20:
    print("青少年")
elif age>=20 and age<65:
    print("成年人")
elif age>=65:
    print("老年人")

#5.7
favourite_fruits = [\'apple\',\'banana\',\'orange\']
if \'apple\' in favourite_fruits:
    print("You really like apples!")
if \'banana\' in favourite_fruits:
    print("You really like bananas!")
if \'orange\' in favourite_fruits:
    print("You really like orange!")
if \'watermalen\' in favourite_fruits:
    print("You really like watermalen!")
if \'grape\' in favourite_fruits:
    print("You really like grape!")