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.
本課程是 Python 3 Programming 專項課程 專項課程的一部分
Python Functions, Files, and Dictionaries
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課程信息
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學生職業成果
25%
完成這些課程後已開始新的職業生涯
20%
通過此課程獲得實實在在的工作福利
學生職業成果
25%
完成這些課程後已開始新的職業生涯
20%
通過此課程獲得實實在在的工作福利
100% 在線
立即開始，按照自己的計劃學習。
第 2 門課程（共 5 門）
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初級
完成時間大約為26 小時
建議：15 hours/week
英語（English）
字幕：英語（English）, 越南語, 韓語
提供方
密歇根大学
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.
教學大綱 - 您將從這門課程中學到什麼
完成時間為 6 小時
Files 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.
完成時間為 6 小時
14 個視頻 （總計 88 分鐘）, 14 個閱讀材料, 3 個測驗
14 個視頻
Welcome to Python Functions, Files, and Dictionaries2分鐘
How to Use the Interactive Textbook14分鐘
Introduction: Files1分鐘
Reading a File9分鐘
Finding a File in Your File System6分鐘
Writing to a File7分鐘
Using With to Open Files5分鐘
Conclusion: Files1分鐘
Introduction: .csv Format3分鐘
Reading a .csv File8分鐘
Writing Data to a .csv File10分鐘
Tips on File Naming2分鐘
Conclusion: .csv Format1分鐘
14 個閱讀材料
Syllabus10分鐘
Help Us Learn More About You!10分鐘
Introduction: Working with Data Files10分鐘
Reading a File10分鐘
Alternative File Reading Methods10分鐘
Iterating Over Lines in a File10分鐘
Finding a File in your File System10分鐘
Writing to a File10分鐘
Using With to Open Files10分鐘
Recipe for Reading and Processing a File10分鐘
CSV Format10分鐘
Reading a .csv File10分鐘
Writing Data to a .csv File10分鐘
Tips on Handling Files10分鐘
1 個練習
Optional - What Did You Use to Practice This Week?4分鐘
完成時間為 6 小時
Dictionaries 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.
完成時間為 6 小時
10 個視頻 （總計 77 分鐘）, 9 個閱讀材料, 4 個測驗
10 個視頻
Dictionaries8分鐘
Demonstration: Dictionary Basics4分鐘
Dictionary Operations7分鐘
Dictionary Methods12分鐘
Demonstration: Dictionary Methods3分鐘
Aliasing and Copying with Dictionaries3分鐘
Dictionary Accumulation13分鐘
Demonstration: Dictionary Accumulation5分鐘
Accumulating Results From a Dictionary12分鐘
Demonstration: Accumulating Results From a Dictionary7分鐘
9 個閱讀材料
Introduction: Dictionary Learning Goals10分鐘
Introduction: Dictionaries10分鐘
Dictionary Operations10分鐘
Dictionary Methods10分鐘
Aliasing and Copying10分鐘
Introduction: Accumulating Multiple Results in a Dictionary10分鐘
Accumulating Results From a Dictionary10分鐘
Accumulating the Best Key10分鐘
When to Use a Dictionary10分鐘
1 個練習
Optional - What Did You Use to Practice This Week?4分鐘
完成時間為 8 小時
Functions 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.
完成時間為 8 小時
16 個視頻 （總計 81 分鐘）, 19 個閱讀材料, 4 個測驗
16 個視頻
Defining Functions5分鐘
Positional Parameter Passing6分鐘
Returning Values12分鐘
Way of the Programmer: Decoding a Function4分鐘
A Function that Accumulates8分鐘
Conclusion: Functions59
Introduction: Variable Scoping and Side Effects48
Local and Global Variables9分鐘
Function Composition10分鐘
Mutable Objects and Side Effects5分鐘
Conclusion: Variable Scoping and Side Effects1分鐘
Introduction: Tuple Packing and Unpacking40
Tuple Packing3分鐘
Tuple Assignment with Unpacking8分鐘
Conclusion: Tuple Packing and Unpacking39
19 個閱讀材料
Introduction to Functions10分鐘
Function Definition10分鐘
Function Invocation10分鐘
Function Parameters10分鐘
Returning a Value from a Function10分鐘
Decoding a Function10分鐘
A Function that Accumulates10分鐘
Local Variables10分鐘
Global Variables10分鐘
Function Composition10分鐘
Flow of Execution Summary10分鐘
Print vs. Return10分鐘
Passing Mutable Objects10分鐘
Side Effects10分鐘
Introduction10分鐘
Tuple Packing10分鐘
Tuples as Return Values10分鐘
Tuple Assignment with Unpacking10分鐘
Unpacking Into Iterator Variables10分鐘
1 個練習
Optional - What Did You Use to Practice This Week?4分鐘
完成時間為 6 小時
More 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.
完成時間為 6 小時
7 個視頻 （總計 49 分鐘）, 10 個閱讀材料, 4 個測驗
7 個視頻
The Listener Loop7分鐘
Break and Continue5分鐘
Way of the Programmer: Infinite Loops4分鐘
Optional Parameters4分鐘
Keyword Parameters7分鐘
Anonymous Functions with Lambda Expressions5分鐘
10 個閱讀材料
Introduction10分鐘
The While Statement10分鐘
The Listener Loop10分鐘
Randomly Walking Turtles10分鐘
Break and Continue10分鐘
Infinite Loops10分鐘
Introduction: Optional Parameters10分鐘
Keyword Parameters10分鐘
Anonymous Function with Lambda Expressions10分鐘
Programming With Style10分鐘
1 個練習
Optional - What Did You Use to Practice This Week?4分鐘
審閱
4.8
來自PYTHON FUNCTIONS, FILES, AND DICTIONARIES的熱門評論
由 SG 提供Sep 15, 2019
It's amazing learn for beginner .A wonderful learning resource and very simple way explains everything . Excellent lessons ,check your understanding ,e-book ,practice, and quiz work and lot of thing
由 DN 提供Jan 28, 2020
Great follow-on from the basics with essential information. Well constructed series, well presented lessons, with great practice questions. I feel a big step closer to writing useful python code.
由 JF 提供Jan 2, 2020
Final project in this course though a bit difficult was satisfying to complete. University of Michigan has the best online teaching program for Python using the Runestone interactive textbook.
由 BA 提供Nov 6, 2019
The course met all my expectations and went beyond. The instructors' explanations were easy to understand and the innovative method of having a digital textbook was undoubtedly convenient.
由 RG 提供Jan 5, 2020
I had wonderful experience learning Python from Coursera. The chapters and practice questions are well organized. It helps to apply concepts and I feel confident to write code in python
由 MS 提供Jul 12, 2019
Great course. Loved the dad jokes. Good pace. I'd recommend a little bit of extra practice before the final project as it deals with material that may already have been forgotten.
由 AS 提供Jun 2, 2019
The instructors presentation is clear and concise. The pace is perfect for beginners in Python and the exercises and practice questions help reinforce the content in the course.
由 MS 提供Sep 24, 2019
Now that I've completed this course and its final project I can confidently say I'm an advanced beginner and well on my way to being at an intermediate level Python programmer.
由 AS 提供Aug 15, 2019
its amazing learn for beginner . i am very thank full coursera and michigan family . but your support not easy possible to learn python.........so very very thank you
由 DL 提供Oct 6, 2019
Great continuation of the first course. Clear, well-ordered lectures and practice-problems/exercises. Especially like the textbook as a companion to the lectures.
由 YF 提供Jun 26, 2019
Good materials. Just that grading peer's assignments seems not so attractive. Not much one can learn from doing so. A simulated code review case will be more fun.
由 LD 提供Aug 8, 2019
This course will teach you how to write simple functions, how to work with dictionaries and files. And there are some good dad jokes in there as well. 5 out of 5
關於 Python 3 Programming 專項課程
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.
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