Task 1: Basic Python ProgrammingBackgroundWe are going to use ‘PyCharm’, an integrated development environment (IDE) forPython. If you want to have it on your own devices, please follow the instructions onthe link: https://www.guru99.com/how-to-install-python.htmlInstall librariesWe need to install 3 Python data analysis libraries: pandas, matplotlib, plotnine, whichhelped us on data analysis and visualization. Please click: File-> Settings -> Project:data_lab -> Project interpreter, then click ‘+’ and type in the library you want to install.Even the first library is still being installed, you can type in the second and the thirdlibraries to install several packages in parallel. 2In the status bar, it shows ‘3 processes running’. You can click and see the installingprocess, which may take a few minutes.3Task 1.1: A number guess gameNow, we will use Python’s most common data types: integer, string, Boolean (True,False), list and dictionary; the most common logic structures: if-else and while; andthe most common operators: =, >, create an interesting guess game.https://www.dropbox.com/s/eh9puev65i5fk71/guess_num.py?dl=0a. Copy the codes, run and play.b. We need to introduce an access control mechanism to the game, as we only wantthe right person to play the game.We can add a simple user name & password check by the data type dictionary:passwordDictionary= {geb:2503, ray: ray110, cuhksz:666}Please check the code and play with the new feature.https://www.dropbox.com/s/2zqwoytcfyb5kkh/guess_num_access_control.py?dl=0Can you give a suggestion that how we can give the VIP pass “cuhksz” somefavor to make it easier for this account?c. We need to introduce a play-limit mechanism, as someone just got addicted to thegame. For example, the game should terminate if you played the game for more than3 times. Please screenshot your code implementation.d. Check with Google, explain what does the structure “try-except” do? Why weneed two? Do we really need two?4Task 2: Analyze Big DataTask 2.1: Load the dataWe are studying the species, hinder foot length and weight of animals captured bysensors. The data sets are stored in ‘surveys.csv’. Please download it and save it in thefolder of ‘data_lab’.https://www.dropbox.com/s/u9oi69xk6mmwe0f/surveys.csv?dl=0We will use the ‘read_csv’ function in the pandas library to load the file ‘surveys.csv’into a variable, then we can start to deal with the data stored in the variable. Download‘py_demo_part1.py’ and save it in the folder of ‘data_lab’.https://www.dropbox.com/s/6mphlaqde441lrc/py_demo_part1.py?dl=0a. Run the code, print (surveys_df)’ will print the variable that holds all data ofthe ‘surveys.csv’ file. The result excerpts the first and the last few lines of the file.b. Now we comment out ‘print (surveys_df)’, uncomment lProgramming代做、代寫Python程序設(shè)計(jì)、IDEine 5 & 6, and runthe code.‘print (surveys_df.dtypes)’ gets the type of each column:5‘print (type(surveys_df))’ gets the output:dtype: objectIt means the variable ‘surveys_df’ is an object of DataFrame of pandas. Bychecking the pandas documentation (https://pandas.pydata.org/pandasdocs/stable/reference/frame.html?highlight=dataframe),it says DataFrame is a “Twodimensionalsize-mutable, potentially heterogeneous tabular data structure”, whichmeans DataFrame is similar to a spreadsheet in Microsoft Excel.Note, you may face lots of attributes and functions on using a library (e.g.,pandas). If we compare a library to a person, attributes, are like this person’scharacteristics; while functions are like this person’s capability. Althoughprogrammers try their best to give attributes and functions nice names to let usersguess their functionalities at the first glance, the best way to find out what theyexactly mean or do is to check with Google or the documentation of that library (e.g.,the above link is the DataFrame page of the pandas documentation). It shows all theattributes and functions of DataFrame. For example, it includes the explanation of‘dtypes’, ‘head()’, ‘tail()’, and other functions in ‘py_demo_part1.py’. Pleaseuncomment and run the lines of functions you are interested in, and check with thedocumentation if you have any doubt.c. Find a proper indexing function in the documentation page to return the valueof the 3rd row, and the 8th column, which is 37.0. Note, the indexing of Python starts 6from 0. Please write the command down.d. What if I want to have the values of the first 3 rows, but only the columns from2nd to 4th, namely, the first 3 rows’ values of month, day and year. Please write thecommand down.e. What if I want to have all the values of the 6th column, namely, the species id.Please write the command down.f. What if I want to have all the values of the 6th column, but with the duplicatesremoved. Please write the command down.7Task 3: Visualize Big DataDownload ‘py_demo_part2.py’ and save it in the folder of ‘data_lab’.https://www.dropbox.com/s/32ozhbhaq7n11rg/py_demo_part2.py?dl=0a. Run the code, and use the documentation page to explore the plotninefunctions:https://plotnine.readthedocs.io/en/stable/b. Please use geom.point() to plot species_id vs hindfoot_length using sex asthe color parameter. In addition, please explain a bit what you observe from theplot.c. Please use geom.bar() to plot species_id vs weight using sex as the colorparameter. In addition, please explain a bit what you observe from the plot.d. Please use geom.point() to plot species_id vs hindfoot_length using sex asthe color parameter, but we want only years of 1979, 1993, 1999, 1977. Inaddition, please explain a bit what you observe from the plot.8END of Tutorial / lab-3轉(zhuǎn)自：http://www.6daixie.com/contents/3/4443.html