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PythonSequences

PythonSequences - Python Sequences Strings Lists and Files...

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Python Sequences Strings, Lists, and Files 1 © Popescu 2012
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Reading: Chapter 5 from Zelle text 2
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Strings String data type 1-D array o characters Text in between quotation marks E.g. “valid string” Simple quotation also accepted, i.e. ‘valid string’ 3
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String operations Input The input() built in function E.g. name = input(“Input your name: “ ) Output The print() built in function E.g. print(name) Indexing Access to any character using integer index Indexing from right using negative indices Indexing returns a string with a single character 4
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String operations 5
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String operations Slicing Defines substrings within string Consider a string variable called sentence 'CS 17700 is offered in spring 2012' sentence[0:3] is ‘CS ‘ sentence[9:] is 'is offered in spring 2012‘ sentence[:8] is ‘CS 17700’ Concatenation ‘123’ + ‘456’ = ‘123456’ Repetition ‘123’*3 = ‘123123123’ 6
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PythonSequences - Python Sequences Strings Lists and Files...

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