20180402
What's the best way to start learning django? [closed] https://stackoverflow.com/questions/4048973/whats-the-best-way-to-start-learning-django
https://docs.djangoproject.com/en/2.0/intro/tutorial01/
How do I get started with web development using Django? https://www.quora.com/How-do-I-get-started-with-web-development-using-Django
The Django Book http://djangobook.py3k.cn/2.0/
How to solve ReadTimeoutError: HTTPSConnectionPool(host='pypi.python.org', port=443) with pip? https://stackoverflow.com/questions/43298872/how-to-solve-readtimeouterror-httpsconnectionpoolhost-pypi-python-org-port
2018.4.3 7:46
~ ⮀ pip install django Collecting django Using cached Django-1.11.11-py2.py3-none-any.whl Requirement already satisfied: pytz in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from django) (2013.7) matplotlib 1.3.1 requires nose, which is not installed. matplotlib 1.3.1 requires tornado, which is not installed. prompt-toolkit 1.0.15 has requirement six>=1.9.0, but you'll have six 1.4.1 which is incompatible. Installing collected packages: django
~ ⮀ sudo pip install django The directory '/Users/###/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. The directory '/Users/###/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. Collecting django Downloading Django-1.11.11-py2.py3-none-any.whl (6.9MB) 100% |████████████████████████████████| 7.0MB 28kB/s Requirement already satisfied: pytz in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from django) (2013.7) matplotlib 1.3.1 requires nose, which is not installed. matplotlib 1.3.1 requires tornado, which is not installed. prompt-toolkit 1.0.15 has requirement six>=1.9.0, but you'll have six 1.4.1 which is incompatible. Installing collected packages: django Successfully installed django-1.11.11
~/PYTHON ⮀ sudo pip install --user tornado The directory '/Users/###/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. The directory '/Users/###/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. Collecting tornado Downloading tornado-5.0.1.tar.gz (504kB) 100% |████████████████████████████████| 512kB 490kB/s Collecting futures (from tornado) Downloading futures-3.2.0-py2-none-any.whl Collecting singledispatch (from tornado) Downloading singledispatch-3.4.0.3-py2.py3-none-any.whl Collecting backports_abc>=0.4 (from tornado) Downloading backports_abc-0.5-py2.py3-none-any.whl Requirement already satisfied: six in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from singledispatch->tornado) (1.4.1) prompt-toolkit 1.0.15 has requirement six>=1.9.0, but you'll have six 1.4.1 which is incompatible. Installing collected packages: futures, singledispatch, backports-abc, tornado Running setup.py install for tornado ... done Successfully installed backports-abc-0.5 futures-3.2.0 singledispatch-3.4.0.3 tornado-5.0.1 ~/PYTHON ⮀ sudo pip install --user nose The directory '/Users/###/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. The directory '/Users/###/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. Requirement already satisfied: nose in /Library/Python/2.7/site-packages (1.3.7) prompt-toolkit 1.0.15 has requirement six>=1.9.0, but you'll have six 1.4.1 which is incompatible. ~/PYTHON ⮀ sudo pip install --user prompt-toolkit The directory '/Users/###/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. The directory '/Users/###/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. Requirement already satisfied: prompt-toolkit in /Library/Python/2.7/site-packages (1.0.15) Requirement already satisfied: wcwidth in /Library/Python/2.7/site-packages (from prompt-toolkit) (0.1.7) Collecting six>=1.9.0 (from prompt-toolkit) Downloading six-1.11.0-py2.py3-none-any.whl Installing collected packages: six Successfully installed six-1.11.0 ~/PYTHON ⮀ sudo pip install --user tornado The directory '/Users/###/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. The directory '/Users/###/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. Requirement already satisfied: tornado in /Users/###/Library/Python/2.7/lib/python/site-packages (5.0.1) Requirement already satisfied: futures in /Users/###/Library/Python/2.7/lib/python/site-packages (from tornado) (3.2.0) Requirement already satisfied: singledispatch in /Users/###/Library/Python/2.7/lib/python/site-packages (from tornado) (3.4.0.3) Requirement already satisfied: backports_abc>=0.4 in /Users/###/Library/Python/2.7/lib/python/site-packages (from tornado) (0.5) Requirement already satisfied: six in /Users/###/Library/Python/2.7/lib/python/site-packa
20180403 21:32
http://initd.org/psycopg/tarballs/PSYCOPG-2-7/ Download psycopg2-2.7.1.tar.gz
Position: /Users/###/Downloads
https://www.postgresql.org/download/macosx/ Download PostgreSQL installer, 2hours - not finished
https://stackoverflow.com/questions/35313876/after-installing-with-pip-jupyter-command-not-found
pip install jupyter or export PATH=~/anaconda2/bin:$PATH
20180404 7:07 Download PostgreSQL installer finished, 138MB Install PostgresSQL finished.
Start a project: mkdir django django-admin.py startproject mysite
20180405 20:31
mysite/ _init_.py manage.py settings.py urls.py ->> python manage.py help
Type 'manage.py help
->> python manage.py runserver open http://127.0.0.1:8000/
如果想和其他开发人员共享同一开发站点的话，需要做另外一些设置。
The Django Book 第二章:入门 结束。
20180406 21:08
创建了第一个Django的web页面。很有成就感。
20180408 8:28
实现了一个动态页面。
觉得下次应该把代码传到Github上去。这样可以直观地看代码上的变化和进度。
2018-4-9 20:45 Create repository in Github. And commit local code to the repository.
Begin to learn chapter 4: Django Templates. need to use python manage.py shell in these examples, or Django will throw an exception.
Next: Creating Template Objects
2018.4.10
Next: Dictionaries and Contexts
2018.4.11 19:59-20:37 Dictionaries and Contexts:
Those are the fundamentals of using the Django template system: just write a template string, create a Template object, create a Context, and call the render() method.
Next: Context Variable Lookup
20180412 20:01
Next: Chapter 3: Django Templates - Basic Template Tags and Filters
20180413 8:12
NEXT: For example, if your context contains a list of (x,y) coordinates called points, you could use the following to output the list of points:
20180413 20:49 Stop to learn Django now. Keep focus on automatetheboringstuff.
Finished 95%: https://automatetheboringstuff.com/chapter4/
20180417 20:50 Finished 95%: https://automatetheboringstuff.com/chapter6/ Chapter 6 – Manipulating Strings
20180418 30min Chapter 7 – Pattern Matching with Regular Expressions https://automatetheboringstuff.com/chapter7/ Next Optional Matching with the Question Mark
20180420 30min
Next Matching Newlines with the Dot Character
20180421 30min
NEXT: Project: Phone Number and Email Address Extractor
20180423 30min NEXT: Practice Questions
20180503 10min https://automatetheboringstuff.com/chapter8/ NEXT: Project: Generating Random Quiz Files
20180506 4-5 hours
Chapter 9 – Organizing Files finished.
20180508 40mins https://automatetheboringstuff.com/chapter10/
NEXT: Assertions
20180515 1 hour
Issue: ImportError: No module named pyperclip
Try1:(No use) https://stackoverflow.com/questions/3819449/how-to-uninstall-python-2-7-on-a-mac-os-x-10-6-4 Remove the symbolic links in /usr/local/bin that point to this Python version see ls -l /usr/local/bin | grep '../Library/Frameworks/Python.framework/Versions/2.7' and then run the following command to remove all the links:
cd /usr/local/bin/ ls -l /usr/local/bin | grep '../Library/Frameworks/Python.framework/Versions/2.7' | awk '{print $9}' | tr -d @ | xargs rm I
Try2(Real solution):
Install python3 Step1: Download https://www.python.org/downloads/release/python-365/
Step2: Install
Step3: pip3 install --upgrade pip
Step4: python3 -m pip install pyperclip
Rerun, succeeded.
NEXT:
https://automatetheboringstuff.com/chapter11/
Downloading a Web Page with the requests.get() Function
20180516:
NEXT: Saving Downloaded Files to the Hard Drive
In Chrome and Internet Explorer for Windows, the developer tools are already installed, and you can press F12 to make them appear. Pressing F12 again will make the developer tools disappear. In Chrome, you can also bring up th developer tools by selecting View->Developer->Developer Tools. In OS X, pressing Command -OPTION-I will open Chrome's Developer Tools.
import os os.getcwd() os.chdir('/Users/xxx/Applications')
Correct: exampleSoup = bs4.BeautifulSoup(exampleFile, "html.parser")
Incorrect: exampleSoup = bs4.BeautifulSoup(exampleFile)
NEXT: Finding an Element with the select() Method
20180517:
I encounter a issue this morning:
len(elems) is 0, I tried many ways but failed. Tonight I checked example.html, and found it was blan, which is very strange. I copy the content to it, then run commands, it works. I wonder why I didn't use this way this morning and waste my precious 15 minutes.
Path is important.
#! /usr/bin/env python3
chmod +x lucky.py
./lucky.py how to get a high paid job
20180519:
NEXT: Controlling the Browser with the selenium Module
20180520
Issue1: Q: How to find file path in OS X? A: Option + Space -> "Show all in Finder" at the bottom of the poped-up window -> select the target file -> right-click, select "Get Info" -> Copy the Where info -> Done.
Issue 2: Q: How to use chromedriver in python3? A:
>>> from selenium import webdriver
>>> driver_path = "/usr/local/bin/chromedriver"
>>> driver = webdriver.Chrome(driver_path)
Issue 3: zsh: bad assignment
Solution: Removed the extra white spaces before and after the = and it worked.
Help post: Installing ChromeDriver on macOS & System PATH Setup https://www.kenst.com/2015/03/installing-chromedriver-on-mac-osx/
New way to install ChromeDriver: brew tap caskroom/cask brew cask install chromedriver
Issue 4: Error: It seems there is already a Binary at '/usr/local/bin/chromedriver'; not linking.
Solution: rm -rf /usr/local/bin/chromedriver
The selenium part didn't finish very good because encountering many issues, one of which is environment variable setting.
Feel depressed. Anyway, will move to the next chapter.
20180521
https://automatetheboringstuff.com/chapter12/
Chapter 12 – Working with Excel Spreadsheets
pip3 install openpyxl==2.1.4 pip3 install --upgrade openpyxl
import os os.getcwd() os.chdir(path)
NEXT:
Converting Between Column Letters and Numbers
20180522:
NEXT: Ideas for Similar Programs (The first one.)
Issue: ModuleNotFoundError: No module named 'census2010'
Unresolved.
Issue: DeprecationWarning: Call to deprecated function get_sheet_by_name (Use wb[sheetname]).
Solution: Use: sheet = wb["UseThisSheet"] instead.
20180523:
>>> wb.get_sheet_names()
Warning (from warnings module):
File "/Users/liuhuajiao/readCensusExcel.py", line 1
#! python3
DeprecationWarning: Call to deprecated function get_sheet_names (Use wb.sheetnames).
['Sheet']
>>> wb.sheetnames
['Sheet']
DeprecationWarning: Call to deprecated function remove_sheet (Use wb.remove(worksheet) or del wb[sheetname]).
NEXT: Writing Values to Cells
NEXT: Ideas for Similar Programs (The second one.)
20180524:
NEXT: Font Objects
NEXT: Practice Questions
20180527
Chapter 14 – Working with CSV Files and JSON Data
NEXT: Writer Objects
20180528
NEXT:
Project: Removing the Header from CSV Files
20180531:
NEXT:
Practice Questions