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Python complete course easy to understand

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Python Complete Course Easy To Understand

its an complete python course. this notes helps the people who want to learn python soon and with easy techniques. Every topic of python is described here with easy understanding.

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Introduction to Python Programming
Course Notes

Phil Spector
Department of Statistics, University of California Berkeley

March 16, 2005

,2

,Contents

1 Introduction 7
1.1 What is Python? . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 The very Basics of Python . . . . . . . . . . . . . . . . . . . . 8
1.3 Invoking Python . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Basic Principles of Python . . . . . . . . . . . . . . . . . . . . 11
1.4.1 Basic Core Language . . . . . . . . . . . . . . . . . . . 11
1.4.2 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.4.3 Object Oriented Programming . . . . . . . . . . . . . . 12
1.4.4 Namespaces and Variable Scoping . . . . . . . . . . . . 13
1.4.5 Exception Handling . . . . . . . . . . . . . . . . . . . . 15

2 String Data 17
2.1 String Constants . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2 Special Characters and Raw Strings . . . . . . . . . . . . . . . 18
2.3 Unicode Strings . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.4 String Operations . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.4.1 Concatenation . . . . . . . . . . . . . . . . . . . . . . . 19
2.4.2 Repetition . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.4.3 Indexing and Slicing . . . . . . . . . . . . . . . . . . . 21
2.4.4 Functions and Methods for Character Strings . . . . . 23

3 Numeric Data 29
3.1 Types of Numeric Data . . . . . . . . . . . . . . . . . . . . . . 29
3.1.1 Hexadecimal and Octal Constants . . . . . . . . . . . . 31
3.1.2 Numeric Operators . . . . . . . . . . . . . . . . . . . . 31
3.1.3 Functions for Numeric Data . . . . . . . . . . . . . . . 32
3.2 Conversion of Scalar Types . . . . . . . . . . . . . . . . . . . . 33

3

, 4 CONTENTS

4 Lists, Tuples and Dictionaries 37
4.1 List Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.2 List Indexing and Slicing . . . . . . . . . . . . . . . . . . . . . 39
4.3 List Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.3.1 Concatenation . . . . . . . . . . . . . . . . . . . . . . . 42
4.3.2 Repetition . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.3.3 The in operator . . . . . . . . . . . . . . . . . . . . . . 43
4.4 Functions and Methods for Lists . . . . . . . . . . . . . . . . . 44
4.5 Tuple Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4.6 Operators and Indexing for Tuples . . . . . . . . . . . . . . . 49
4.7 Functions and Methods for Tuples . . . . . . . . . . . . . . . . 49
4.8 Dictionaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
4.9 Functions and Methods for Dictionaries . . . . . . . . . . . . . 52

5 Input and Output 55
5.1 The print command . . . . . . . . . . . . . . . . . . . . . . . 55
5.2 Formatting Strings . . . . . . . . . . . . . . . . . . . . . . . . 55
5.3 Using Names in Format Strings . . . . . . . . . . . . . . . . . 57
5.4 File Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5.4.1 Methods for Reading . . . . . . . . . . . . . . . . . . . 59
5.4.2 Methods for Writing . . . . . . . . . . . . . . . . . . . 60
5.4.3 “Printing” to a File . . . . . . . . . . . . . . . . . . . . 60
5.4.4 Other Methods . . . . . . . . . . . . . . . . . . . . . . 61
5.4.5 File Object Variables . . . . . . . . . . . . . . . . . . . 61
5.5 Standard Input and Output Streams . . . . . . . . . . . . . . 62
5.6 Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

6 Programming 67
6.1 Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.2 Indentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
6.3 Truth, Falsehood and Logical Operators . . . . . . . . . . . . 72
6.4 if statement . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.5 for loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6.6 for loops and the range function . . . . . . . . . . . . . . . . 78
6.7 while loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
6.8 Control in Loops: break and continue . . . . . . . . . . . . . 82
6.9 List Comprehensions . . . . . . . . . . . . . . . . . . . . . . . 84

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