Lists

redd

1. zoo_animals = ["pangolin", "cassowary", "sloth", "pig"];
   
2. 
   
3. if len(zoo_animals) > 3:
   
4.     print "The first animal at the zoo is the " + zoo_animals[0]
   
5.     print "The second animal at the zoo is the " + zoo_animals[1]
   
6.     print "The third animal at the zoo is the " + zoo_animals[2]
   
7.     print "The fourth animal at the zoo is the " + zoo_animals[3]

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redd

1. numbers = [5, 6, 7, 8]
   
2. 
   
3. print "Adding the numbers at indices 0 and 2..."
   
4. print numbers[0] + numbers[2]
   
5. print "Adding the numbers at indices 1 and 3..."
   
6. print numbers[1] + numbers[3]

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redd

1. zoo_animals = ["pangolin", "cassowary", "sloth", "tiger"]
   
2. # Last night our zoo's sloth brutally attacked
   
3. #the poor tiger and ate it whole.
   
4. 
   
5. # The ferocious sloth has been replaced by a friendly hyena.
   
6. zoo_animals[2] = "hyena"
   
7. 
   
8. # What shall fill the void left by our dear departed tiger?
   
9. # Your code here!
   
10. zoo_animals[3] = "pig"

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redd

1. suitcase = []
   
2. suitcase.append("sunglasses")
   
3. suitcase.append("hat")
   
4. suitcase.append("shoes")
   
5. suitcase.append("underwear")
   
6. 
   
7. list_length = len(suitcase) # Set this to the length of suitcase
   
8. 
   
9. print "There are %d items in the suitcase." % (list_length)
   
10. print suitcase

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redd

1. suitcase = ["sunglasses", "hat", "passport", "laptop", "suit", "shoes"]
   
2. 
   
3. first  = suitcase[0:2]  # The first and second items (index zero and one)
   
4. middle = suitcase[2:4]  # Third and fourth items (index two and three)
   
5. last   = suitcase[4:]  # The last two items (index four and five)

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redd

1. animals = "catdogfrog"
   
2. cat  = animals[:3]   # The first three characters of animals
   
3. dog  = animals[3:6]   # The fourth through sixth characters
   
4. frog = animals[6:]   # From the seventh character to the end

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redd

1. animals = ["aardvark", "badger", "duck", "emu", "fennec fox"]
   
2. duck_index = animals.index("duck")   # Use index() to find "duck"
   
3. 
   
4. animals.insert(duck_index, "cobra")
   
5. 
   
6. print animals # Observe what prints after the insert operation

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redd

1. my_list = [1,9,3,8,5,7]
   
2. 
   
3. for number in my_list:
   
4.     print 2 * number

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redd

1. start_list = [5, 3, 1, 2, 4]
   
2. square_list = []
   
3. 
   
4. for x in start_list:
   
5.     square_list.append(x ** 2)
   
6. square_list.sort()
   
7. print square_list

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redd

1. backpack = ['xylophone', 'dagger', 'tent', 'bread loaf']
   
2. backpack.remove("dagger")

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redd

1. a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
   
2. for x in a:
   
3.     if x % 2 == 0:
   
4.         print x

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print 偶數

redd

1. for letter in "Redd":
   
2.     print letter
   
3.    
   
4. # Empty lines to make the output pretty
   
5. print
   
6. print
   
7. 
   
8. word = "Programming is fun!"
   
9. 
   
10. for letter in word:
    
11.     # Only print out the letter i
    
12.     if letter == "i":
    
13.         print letter

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