CODEWITHSUNDEEP
pythontypes
aretai
aretai

Reputation: 1641

type declaration python error

Hi am new to python found this code in one book and wanted to try it but line 4 says its an error "encountered type when expecting one of the following and a list of brackets. How to fix it?

#: arrays/PythonLists.py

aList = [1, 2, 3, 4, 5]
print type(aList) # <type 'list'>
print aList # [1, 2, 3, 4, 5]
print aList[4] # 5   Basic list indexing
aList.append(6) # lists can be resized
aList += [7, 8] # Add a list to a list
print aList # [1, 2, 3, 4, 5, 6, 7, 8]
aSlice = aList[2:4]
print aSlice # [3, 4]


class MyList(list): # Inherit from list
    # Define a method, 'this' pointer is explicit:
    def getReversed(self):
        reversed = self[:] # Copy list using slices
        reversed.reverse() # Built-in list method
        return reversed 

list2 = MyList(aList) # No 'new' needed for object creation
print type(list2) # <class '__main__.MyList'>
print list2.getReversed() # [8, 7, 6, 5, 4, 3, 2, 1]

#:~

Upvotes: 0

Views: 257

Answers (1)

Reinstate Monica
Reinstate Monica

Reputation: 4723

You are using Python 3.x, where print is a function and no longer a statement. The book is written for Python 2.x, where print still is a statement.

You fix it by using a version of Python that matches what the book describes, or get a book for a newer version of Python (3.x).

Your immediate problem can be solved by writing 

print (type(aList))

Upvotes: 4

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