PracticeInPythonCrashCourse/chpt3practice.py at master · linhesun/PracticeInPythonCrashCourse · GitHub

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#Chapter 3 practice
# Linhe Sun

# practice 3-1
friends = ['lijian huang', 'yulin niu', 'hua li', 'hanlin wang']
print(friends[0].title())
print(friends[1].title())
print(friends[-2].title())
print(friends[-1].title())

# practice 3-2
print(friends[0].title() + ", long time no see!")
print(friends[1].title() + ", long time no see!")
print(friends[-2].title() + ", long time no see!")
print(friends[-1].title() + ", long time no see!")

# practice 3-3
travelmood = ['by bike', 'by foot', 'by bus', 'by metro', 'by taxi']
print("I would like to go to work " + travelmood[0] + ".")
print("I would like to go to work " + travelmood[1] + ".")
print("I would like to go to work " + travelmood[2] + ".")
print("I would like to go to work " + travelmood[-2] + ".")
print("I would like to go to work " + travelmood[-1] + ".")

print("\n")
# practice 3-4
invite = ['lijian huang', 'yulin niu', 'hua li', 'hanlin wang']
print("I would like to invite " + invite[0].title() + " to dinner.")
print("I would like to invite " + invite[1].title() + " to dinner.")
print("I would like to invite " + invite[2].title() + " to dinner.")
print("I would like to invite " + invite[3].title() + " to dinner.")

# practice 3-5
print(invite[0].title() + " cannot come.")
invite[0] = "jiaxin luo"
print("I would like to invite " + invite[0].title() + " to dinner.")
print("I would like to invite " + invite[1].title() + " to dinner.")
print("I would like to invite " + invite[2].title() + " to dinner.")
print("I would like to invite " + invite[3].title() + " to dinner.")

# practice 3-6
print("Now I have found a larger table. I can invite more people!")
invite.insert(0, 'qiaoxian li')
invite.insert(2, 'xueqing fang')
invite.append('lijun xu')
# print(len(invite)) # 7
for i in range(0, len(invite)):
	# print(i) #0-6
	print("I would like to invite " + invite[i].title() + " to dinner.")

# practice 3-7
print("The new table cannot be dilivered in time. I can invite only two persons!")
while len(invite) > 2:
	poped_invite = invite.pop()
	print(poped_invite.title() + ", sorry I cannot invite you anymore.")

for i in range(0, len(invite)):
	print(invite[i].title() + ", I'm glad to inform you that you are still invited.")

del invite[0]
del invite[0] # now the [1] become [0]
print(invite)

print("\n\n\n")
# practice 3-8
places = ['Tokyo', 'Chongqing', 'New York', 'Paris', 'London', 'Haifa']
print(places)
print(sorted(places))
print(places)
print(sorted(places, reverse = True))
print(places)
places.reverse()
print(places)
places.reverse()
print(places)
places.sort()
print(places)
places.sort(reverse = True)
print(places)

# practice 3-9
invite = ['lijian huang', 'yulin niu', 'hua li', 'hanlin wang']
invite.insert(0, 'qiaoxian li')
invite.insert(2, 'xueqing fang')
invite.append('lijun xu')
print("I invited " + str(len(invite)) + " friends to dinner.")

# practice 3-10
rivers = ['Yellow River', 'Yangzi River', 'Huai River', 'Heilong River', 'Guo River']
print(rivers)
del rivers[0]
print(rivers)
rivers.append('Qinhuai River')
print(rivers)
poped_rivers = rivers.pop()
print(rivers)
print(sorted(rivers))
rivers.reverse()
print(rivers)
rivers.sort()
print(rivers)
rivers.sort(reverse = True)
print(rivers)

# practice 3-11
print(rivers[4])
nations = []
print(nations[-1])