《Python编程——从入门到实践》第五章部分习题解

# 5-2
str1 = 'Basketball'
str2 = 'Football'
print(str1 == str2)
print(str1 != str2)
print(str1.lower() == str1)
print(str2.lower() != str2)
num = 35
print(num == 35)
print(num != 30)
print(num > 11)
print(num < 23)
print(num >= 35)
print(num <= 30)
print(num == 35 and num > 30)
print(num == 35 or num < 30)
list_ = ['James', 'Jordan']
print('James' in list_)
print('Kobe' in list_)

# 5-6
age = 30
if age < 2 :
print('He is a baby.')
elif age >= 2 and age < 4 :
print('He is studying walking.')
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.')
else:
print('He is an elder.')

# 5-10
current_users = ['Curry', 'Thompson', 'Iguodala', 'Durant', 'Pachulia']
new_users = ['Curry', 'Green', 'Iguodala', 'West', 'McGee']
for new_user in new_users:
if new_user in current_users:
print('You need to input another name.')
elif new_user.lower() in current_users:
print('You need to input another name.')
elif new_user.upper() in current_users:
print('You need to input another name.')
elif new_user.title() in current_users:
print('You need to input another name.')
else:
print('Your name is new.')