This course introduces the dictionary data structure and user-defined functions. You’ll learn about local and global variables, optional and keyword parameter-passing, named functions and lambda expressions. You’ll also learn about Python’s sorted function and how to control the order in which it sorts by passing in another function as an input. For your final project, you’ll read in simulated social media data from a file, compute sentiment scores, and write out .csv files. It covers chapters 10-16 of the textbook “Fundamentals of Python Programming,” which is the accompanying text (optional and free) for this course.
This course is a follow-up to the "Python Basics" course (course 1 of the Python 3 Programming Specialization), and it is the second of five courses in the specialization.
Ce cours fait partie de la Spécialisation Python 3 Programming
Python Functions, Files, and Dictionaries
proposé par
Programme du cours : ce que vous apprendrez dans ce cours
Semaine
1Files and CSV Output
In week one the video lectures and the Runestone textbook will introduce you to the idea of incorporating files into your programs as an additional source of data. You will learn how to read from a file, write to a file, and how to work with the .csv data format.
13 vidéos (Total 85 min), 14 lectures, 3 quiz
13 vidéos
How to Use the Interactive Textbook14 min
Introduction: Files1 min
Reading a File9 min
Finding a File in Your File System6 min
Writing to a File7 min
Using With to Open Files5 min
Conclusion: Files1 min
Introduction: .csv Format3 min
Reading a .csv File8 min
Writing Data to a .csv File10 min
Tips on File Naming2 min
Conclusion: .csv Format1 min
14 lectures
Syllabus10 min
Help Us Learn More About You!10 min
Introduction: Working with Data Files10 min
Reading a File10 min
Alternative File Reading Methods10 min
Iterating Over Lines in a File10 min
Finding a File in your File System10 min
Writing to a File10 min
Using With to Open Files10 min
Recipe for Reading and Processing a File10 min
CSV Format10 min
Reading a .csv File10 min
Writing Data to a .csv File10 min
Tips on Handling Files10 min
1 exercice pour s'entraîner
Optional - What Did You Use to Practice This Week?4 min
Semaine
2Dictionaries and Dictionary Accumulation
In week two the video lectures and the Runestone textbook will focus on a new data type, dictionaries. You will be introduced to the mechanics of dictionaries and then get practice using them in accumulation patterns, both to build a dictionary using the pattern as well as find the best, or worst, result using the pattern.
10 vidéos (Total 77 min), 9 lectures, 4 quiz
10 vidéos
Dictionaries8 min
Demonstration: Dictionary Basics4 min
Dictionary Operations7 min
Dictionary Methods12 min
Demonstration: Dictionary Methods3 min
Aliasing and Copying with Dictionaries3 min
Dictionary Accumulation13 min
Demonstration: Dictionary Accumulation5 min
Accumulating Results From a Dictionary12 min
Demonstration: Accumulating Results From a Dictionary7 min
9 lectures
Introduction: Dictionary Learning Goals10 min
Introduction: Dictionaries10 min
Dictionary Operations10 min
Dictionary Methods10 min
Aliasing and Copying10 min
Introduction: Accumulating Multiple Results in a Dictionary10 min
Accumulating Results From a Dictionary10 min
Accumulating the Best Key10 min
When to Use a Dictionary10 min
1 exercice pour s'entraîner
Optional - What Did You Use to Practice This Week?4 min
Semaine
3Functions and Tuples
In week three you will be introduced to the construction of functions. Up to this point, you have used functions in the programs before, but have not had a chance to write your own functions, including how to define a function, how to incorporate parameters, how to return data from a function, the local or global scope of variables, and potential side effects that could occur from function execution. Finally, we look at tuples more in depth, and how automatic packing and unpacking of tuples can be used in functions and in for loops.
16 vidéos (Total 81 min), 19 lectures, 4 quiz
16 vidéos
Defining Functions5 min
Positional Parameter Passing6 min
Returning Values12 min
Way of the Programmer: Decoding a Function4 min
A Function that Accumulates8 min
Conclusion: Functions59s
Introduction: Variable Scoping and Side Effects48s
Local and Global Variables9 min
Function Composition10 min
Mutable Objects and Side Effects5 min
Conclusion: Variable Scoping and Side Effects1 min
Introduction: Tuple Packing and Unpacking40s
Tuple Packing3 min
Tuple Assignment with Unpacking8 min
Conclusion: Tuple Packing and Unpacking39s
19 lectures
Introduction to Functions10 min
Function Definition10 min
Function Invocation10 min
Function Parameters10 min
Returning a Value from a Function10 min
Decoding a Function10 min
A Function that Accumulates10 min
Local Variables10 min
Global Variables10 min
Function Composition10 min
Flow of Execution Summary10 min
Print vs. Return10 min
Passing Mutable Objects10 min
Side Effects10 min
Introduction10 min
Tuple Packing10 min
Tuples as Return Values10 min
Tuple Assignment with Unpacking10 min
Unpacking Into Iterator Variables10 min
1 exercice pour s'entraîner
Optional - What Did You Use to Practice This Week?4 min
Semaine
4More Iteration and Advanced Functions
In week four the video lectures and the Runestone textbook will outline a more advanced iteration mechanism, the while loop. You will be introduced to using it when getting feedback from users, as well as applying it to the turtle module to draw images. Additionally, you will also be exposed to more advanced function concepts such as the idea of parameters being optional, not required, and anonymous functions using lambda.
7 vidéos (Total 49 min), 10 lectures, 4 quiz
7 vidéos
The While Statement14 min
The Listener Loop7 min
Break and Continue5 min
Way of the Programmer: Infinite Loops4 min
Optional Parameters4 min
Keyword Parameters7 min
Anonymous Functions with Lambda Expressions5 min
10 lectures
Introduction10 min
The While Statement10 min
The Listener Loop10 min
Randomly Walking Turtles10 min
Break and Continue10 min
Infinite Loops10 min
Introduction: Optional Parameters10 min
Keyword Parameters10 min
Anonymous Function with Lambda Expressions10 min
Programming With Style10 min
1 exercice pour s'entraîner
Optional - What Did You Use to Practice This Week?4 min
4.9
4 avisMeilleurs avis
par MN•Jan 5th 2019
This is the course to do because it makes use of spaced repetition learning - scientifically proven to be the best for recollection.
Enseignants
Paul Resnick
Michael D. Cohen Collegiate ProfessorSchool of Information
Steve Oney
Assistant ProfessorSchool of Information
Jaclyn Cohen
LecturerSchool of Information
À propos de University of Michigan
The mission of the University of Michigan is to serve the people of Michigan and the world through preeminence in creating, communicating, preserving and applying knowledge, art, and academic values, and in developing leaders and citizens who will challenge the present and enrich the future.
À propos de la Spécialisation Python 3 Programming
This specialization teaches the fundamentals of programming in Python 3. We will begin at the beginning, with variables, conditionals, and loops, and get to some intermediate material like keyword parameters, list comprehensions, lambda expressions, and class inheritance.
You will have lots of opportunities to practice. You will also learn ways to reason about program execution, so that it is no longer mysterious and you are able to debug programs when they don’t work.
By the end of the specialization, you’ll be writing programs that query Internet APIs for data and extract useful information from them. And you’ll be able to learn to use new modules and APIs on your own by reading the documentation. That will give you a great launch toward being an independent Python programmer.
This specialization is a good next step for you if you have completed Python for Everybody but want a more in-depth treatment of Python fundamentals and more practice, so that you can proceed with confidence to specializations like Applied Data Science with Python.
But it is also appropriate as a first set of courses in Python if you are already familiar with some other programming language, or if you are up for the challenge of diving in head-first.
Foire Aux Questions
When will I have access to the lectures and assignments?
Once you enroll for a Certificate, you’ll have access to all videos, quizzes, and programming assignments (if applicable). Peer review assignments can only be submitted and reviewed once your session has begun. If you choose to explore the course without purchasing, you may not be able to access certain assignments.
What will I get if I subscribe to this Specialization?
When you enroll in the course, you get access to all of the courses in the Specialization, and you earn a certificate when you complete the work. Your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile. If you only want to read and view the course content, you can audit the course for free.
What is the refund policy?
Is financial aid available?
D'autres questions ? Visitez le Centre d'Aide pour les Etudiants.
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