I have a project to do for after create a webpage that display the latest weather from my CSV file.
I would like some details how to do it (don't really get the http://flask.pocoo.org/docs/installation/#installation installation setup)
Can anyone mind explain me how to do it simply?
Thanks.
I'm running on Windows 7, with the Windows Powershell.
Install pip as described here: How do I install pip on Windows?
Then do
pip install flask
That installation tutorial is a bit misleading, it refers to actually running it in a production environment.
First install flask using pip,
pip install Flask
* If pip is not installed then install pip
Then copy below program (hello.py)
from flask import Flask
app = Flask(__name__)
#app.route("/")
def hello():
return "Hello World!"
if __name__ == "__main__":
app.run()
Now, run the program
python hello.py
Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
Just copy paste the above address line in your browser.
Reference: http://flask.pocoo.org/
Assuming you are a PyCharm User, its pretty easy to install Flask
This will help users without shell pip access also.
Open Settings(Ctrl+Alt+s) >>
Goto Project Interpreter>>
Double click pip>> Search for flask
Select and click Install Package ( Check Install to site users if intending to use Flask for this project alone
Done!!!
Cases in which flask is not shown in pip:
Open Manage Repository>>
Add(+) >> Add this following url
https://www.palletsprojects.com/p/flask/
Now back to pip, it will show related packages of flask,
select flask>>
install package>>
Voila!!!
https://www.youtube.com/watch?v=QjtW-wnXlUY&t=38s
Follow as in the url
This is how i do :
1) create an app.py in Sublime Text or Pycharm, or whatever the ide, and in that app.py have this code
from flask import Flask
app = Flask(__name__)
#app.route('/')
def helloWorld():
return'<h1>Hello!</h1>'
This is a very basic program to printout a hello , to test flask is working.I would advise to create app.py in a new folder, then locate where the folder is on command prompt
enter image description here
type in these line of codes on command prompt
>py -m venv env
>env\Scripts\activate
>pip install flask
Then
>set FLASK_APP=app.py
>flask run
Then press enter all will work
The name of my file is app.py, give the relevant name as per your file in code line
set FLASK_APP=app.py
Also if your python path is not set, in windows python is in AppData folder its hidden, so first have to view it and set the correct path under environment variables. This is how you reach environment variables
Control panel ->> system and security ->> system ->> advanced system setting
Then in system properties you get environment variables
On Windows, installation of easy_install is a little bit trickier, but still quite easy. The easiest way to do it is to download the distribute_setup.py file and run it. The easiest way to run the file is to open your downloads folder and double-click on the file.
Next, add the easy_install command and other Python scripts to the command search path, by adding your Python installation’s Scripts folder to the PATH environment variable. To do that, right-click on the “Computer” icon on the Desktop or in the Start menu, and choose “Properties”. Then click on “Advanced System settings” (in Windows XP, click on the “Advanced” tab instead). Then click on the “Environment variables” button. Finally, double-click on the “Path” variable in the “System variables” section, and add the path of your Python interpreter’s Scripts folder. Be sure to delimit it from existing values with a semicolon. Assuming you are using Python 2.7 on the default path, add the following value:
;C:\Python27\Scripts
And you are done! To check that it worked, open the Command Prompt and execute easy_install. If you have User Account Control enabled on Windows Vista or Windows 7, it should prompt you for administrator privileges.
Now that you have easy_install, you can use it to install pip:
easy_install pip
First: I assumed you already have Python 2.7 or 3.4 installed.
1: In the Control Panel, open the System option (alternately, you can right-click on My Computer and select Properties). Select the “Advanced system settings” link.
In the System Properties dialog, click “Environment Variables”.
In the Environment Variables dialog, click the New button underneath the “System variables” section.
if someone is there that above is not working, then kindly append to your PATH with the C:\Python27 then it should surely work. C:\Python27\Scripts
Run this command (Windows cmd terminal): pip install virtualenv
If you already have pip, you can upgrade them by running:
pip install --upgrade pip setuptools
Create your project. Then, run virtualenv flask
heres a step by step procedure (assuming you've already installed python):
first install chocolatey:
open terminal (Run as Administrator) and type in the command line:
C:/> #powershell -NoProfile -ExecutionPolicy Bypass -Command "iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin
it will take some time to get chocolatey installed on your machine. sit back n relax...
now install pip. type in terminal
cinst easy.install pip
now type in terminal:
pip install flask
YOU'RE DONE !!!
Tested on Win 8.1 with Python 2.7
I have windows 10 and pythonv3.5. #uku answer is correct. however, problem I was facing is that where are python scripts which are to be added in environment variable. So I found out that we need to add
C:\Users\\AppData\Local\Programs\Python\Python35\Scripts
above location as environment variable. If it still doesnot work search for python in C Drive then find out script locations.
If You are using windows then go to python installation path like.
D:\Python37\Scripts>pip install Flask
it take some movement to download the package.
you are a PyCharm User, its good easy to install Flask
First open the pycharm press
Open Settings(Ctrl+Alt+s)
Goto Project Interpreter
Double click pip>>
search bar (top of page) you search the flask and click install package
such Cases in which flask is not shown in pip: Open Manage Repository>> Add(+) >> Add this following url
https://www.palletsprojects.com/p/flask/
Now back to pip, it will show related packages of flask,
select flask>>
install package
Related
I want to run a python script with the cherrypy module. I use pip install cherrypy to install it and all looks ok. Then I click the "Run python file" button and I face the error ModuleNotFoundError: No module named 'cherrypy'.
Trying to reinstall cherrypy I see many Requirement already satisfied responses.
If it helps I have already edit, in the user path variables panel, the Path variable and added C:\Users\username\AppData\Local\Programs\Python\Python37-32\Scripts as a path.
edit: I suspect some problem with the path. So i run the following.
>>> import os
>>> import sys
>>> os.path.dirname(sys.executable)
'C:\\Python25'
it returns: 'C:\\Users\\username\\AppData\\Local\\Microsoft\\WindowsApps\\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0'
Have you tried to install cherrypy using C:\Users\username\AppData\Local\Programs\Python\Python37-32\Scripts\pip install cherrypy
When I install py libraries I always run where python and find the right python copy it and modify the path so it goes in Scripts then run pip install cherrypy
Also I noticed that when I install py libraries it seems VSCode won't recognize it even though it runs. To fix this you have to restart VSCode again
Another possibility is that your VSCode isn't using correct version of Python. To check this look at VSCode bottom left you should see your python version. If VSCode can't recognize it you will have to enter the Python path manually by Open Command Palette Ctrl+Shift+P and choose Python: Select Interpreter then click enter Interpreter path
When I run the following command on windows visual code terminal to test my code
brownie run scripts/file.py --network kovan
I get this error
"SolcInstallationError: Downloaded binary would not execute, or returned unexpected output."
Also some errors referring to files for running the installation but so far my trouble shooting has led me to uninstall brownie then install with pipx and initialized a package.json and ran
npm install -g solc
and i still get that error whenever I run the script
Install Solc on Windows
Download the Windows binary from
https://github.com/ethereum/solidity/releases
Put the solc-windows.exe into a new folder
Rename solc-windows.exe to solc.exe
Launch a command prompt and cd into the directory where solc.exe was
extracted to
First check the version
solc --version
In your case I recommend adding it to you PATH variable:
Click Start and type system. From the search results select System
(Control Panel)
Start System
From the System window on the left click Advanced system settings
On the Advanced tab click Environmental variables
Under User variables for… select Path and click Edit
Add the path to your solc installation, then click OK, OK, and OK to
save. Close and reopen any command prompts for the change to be
reflected.
Credits: https://www.codeooze.com/blockchain/solc-hello-world/
When I do the below:
>>> import gensim.downloader as api
>>> model = api.load("glove-twitter-25") # load glove vectors
the gensim.downloader API throws the below error:
[Errno 2] No such file or directory:
'/Users/vtim/gensim-data/information.json'.
What am I doing wrong?
I had the same problem and I solved it in these steps. I am using mac, pycharm, and virtualenv. I don't have too much python experience but this is how I did it:
1.1 You have to create a folder named 'gensim-data' with directory '/Users/vtim/gensim-data'. This can be done by running command 'mkdir gensim-data' in your terminal (the same place where you can use pip install commands).
1.2 Then you have to add the folder to your project as a content root (so that the code can access it). From Pycharm go from the main application menu (next to Apple logo with mac) Pycharm -> Preferences and there Project -> Project Structure and from there on the right menu choose 'Add content root'. Find the gensim-data folder that you just made and add it.
1.3 Now you should see the 'gensim-data' folder in your project folder where, for example, venv (virtualenv) is also if you are using it. Now create a file to the 'gensim-data' folder named as 'information.json'. Then copy the code found from this link to the 'information.json' file: https://github.com/RaRe-Technologies/gensim-data/blob/master/list.json
(The problem that you have is that gensim.downloader api may not have access to write documents to the specific directory or it can not read them. In my case it couldn't do either.)
If your code is still not working, you should do the next step:
2.1 In my case I had also a problem that the api could not access files the right files from internet. This problem is solved here: https://stackoverflow.com/a/42098127/14075343 . So find the folder/application named Python 3.8 (if you are using 3.8 version) from your computer, open it and double click 'Install Certificates.command'. Or you can try to run from terminal 'open /Applications/Python\ 3.8/Install\ Certificates.command'
Now the code should work. If it still doesn't you can try to run these codes. I am not sure if it makes a difference but I run these on the way I found the solution:
sudo python3 -m pip install --upgrade gensim
sudo -H pip install virtualenv
sudo chown -R $USERNAME /Users/$USERNAME/Library/Caches/pip
I had both the issues 'information.json' related as well as the certificate one and was able to resolve it by following the steps above. As a tip you can also try testing it in command line by doing
python3 -m gensim.downloader -i word2vec-google-news-300
replace word2vec-google-news-300 with the dataset that you want to download in
https://github.com/RaRe-Technologies/gensim-data/blob/master/list.json
I'm not familiar with using command prompt and having trouble at the start of the django for python set up process which i'm reading here:
https://docs.djangoproject.com/en/2.2/intro/tutorial01/
My problem appears to be the 'python' command doesn't work (please see my command prompt screen shot).
I tried adding it into 'System variables' in the 'Environment Variables' as shown in the other screen shot.
Is there something i have done incorrectly here?
Also although i can get the create the initial project the only place i can create it is in the 'c:\Python\Lib\site-packages\django\bin' folder because i have to be looking at this folder in order to run the django-admin.py file.
I think the second issue is related to the first issue though i.e. if the 'python' command worked i could just run 'python django-admin.py startproject mysite' while my directory path is set to where ever i want the project to be created.
I expect i could simply move the mysite folder to where i want it but i feel i need to understand why this all isn't working as expected before moving on.
Additional:
I've now tried creating a virtual environment as suggested in the comments.
Running 'pip install virtualenvwrapper-win' appears to have worked. Running 'mkvirtualenv myproject' has not worked. It says 'C:\Users\mogwa\Envs is not
a directory although i can view this path so it is actually there.
https://docs.djangoproject.com/en/2.2/howto/windows/
Create Python virtual envoirement (virtual env, venv). Wait a little.
for Linux/GNU:
python -m venv venv
for Windows: (If not python in windows paths)
py -m venv venv
Activate your new python envoirement
for Linux/GNU:
source venv/bin/activate
for Windows: (Option 1)
source venv/Scripts/activate
for Windows: (Option 2)
.\venv\Scripts\activate.bat
Install django over pip (You should see (venv))
pip install Django
Start new Django Project:
django-admin startproject projectname
For Start new Django App:
django-admin startapp appname
I'm new to pycharm, virtualenv, linux and git.
I've recently begun a journey of using djangoto make webapps. Before I used sublime to make scripts however now a more complex project management system such as pycarm was needed. I actually wanted to get a linux VM and go down that road but was advised that windows python IDE such as pycharm would be suitable
I recently learnt the importance of dependencies and how to use virtualenv. However in this tutorial, under the 'How do I use my shiny new virtual environment?' it starts using commands such as:
ls env
and
which python
Neither of which my pycharm console would understand.
I could use a console emulator such cmder to use the commands but then I would remove the convience of using the IDE's integrated one.
Should I upgrade to a linux VM ? Or can I install a package that allows me to use such commands in PyCharm.
As a bonus question, what are the commands in that tutorial ? are they linux commands? when ever i see $ .... is that the linux console ?
You can accomplish this using Vagrant: https://www.vagrantup.com/
You can use Vagrant and VirtualBox to setup a Linux VM (distro of your choice) and then install all of your Python dependencies in the VM. Once you have that setup, you can tell PyCharm to use the Python interpreter in your VM by following these steps:
Open the project settings dialog box in PyCharm.
Expand Project: (your project name) on the left side.
Click on Project Interpreter.
Click on the cog icon on the upper right side of the window and select Add Remote.
Click on the Vagrant radio button.
In the Vagrant Instance Folder box, select the directory your Vagrantfile is located in.
In the Vagrant Host URL box, make sure ssh://vagrant#127.0.0.1:2222 is specified.
Click OK.
Since Vagrant is compatible with Windows this solution should work for you. I have done it successfully using macOS and it works great. Good luck!
You might find this tutorial useful: https://developer.rackspace.com/blog/a-tutorial-on-application-development-using-vagrant-with-the-pycharm-ide/
I got this to work on Windows 10 with Anaconda Prompt. This terminal which comes with Anaconda, creates a "base" environment with a linux-like virtual machine and your Windows file system (C:\\) mounted to /c, and has bash installed with common Unix commands like cd, ls, chmod, echo, cat, ... Running programs from bash with access to environment variables is much nicer than Windows Powershell etc.
Now to get your Terminal in Pycharm to use Anaconda Prompt instead of cmd.exe, I followed this answer. After installing Anaconda and/or Anaconda Prompt, right-click -> Open File Location -> right-click the shortcut -> Properties -> copy file path. Then use your file path instead.
Conda is great for package environment management. Learn more about it here. For Django + Conda specifically, read here. You can also use pip to install from Python package indexes, github repos, and requirements.txt files instead. Unless you know how Anaconda Prompt works, I don't recommend creating your own environments from scratch. What worked for me was:
(base) C:\Users\wassadamo> conda create -n mynewenvironment --copy base
...
(base) C:\Users\wassadamo> conda activate mynewenvironment
(mynewenvironment) C:\Users\wassadamo> ls
folderA folderB file.txt
Works!
Whenever I try running conda deactivate to leave the base environment, my bash commands would stop working. So clone base as above.
Another tip: if you want to run shell scripts from Terminal within PyCharm with Anaconda Prompt this way, then execute them (e.g. "run.sh") on command line with
bash run.sh
I tried putting this on the first line of my run.sh
#!/usr/bin/bash
And running it with
./run.sh
But this had the effect of running it in an external Anaconda Prompt instance (add sleep, or some user input command to force it to wait and see for yourself). Explicitly running my .sh files with bash had the desired effect of running them in the same shell as I started them in PyCharm Terminal configured with Anaconda Prompt.