Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Flask Basics Welcome to Flask First Steps

Mit Sengupta
Mit Sengupta
13,823 Points
Posted by Mit Sengupta
Mit Sengupta
13,823 Points

typing : pip freeze | grep flask . But in the workspace it is showing : bash: peep: command not found

Can someone please help me?

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

In the Treehouse Workspaces, there is an environment variable set that focuses pip on the local user changes. So pip freeze only shows what you have installed instead of all the packages installed. To temporarily by-pass this environ var use the --isolated switch (docs)

treehouse:~/workspace$ pip --version                                                             
pip 7.1.2 from /usr/local/pyenv/versions/3.5.0/lib/python3.5/site-packages (python 3.5)          
treehouse:~/workspace$ env | grep -i pip                                                         
PIP_USER=true                                                                                    
LESSOPEN=||/usr/bin/lesspipe.sh %s                                                               
treehouse:~/workspace$ pip freeze                                                                
treehouse:~/workspace$ pip --isolated freeze                                                     
coverage==4.0.3                                                                                  
Django==1.9                                                                                      
flake8==2.2.3                                                                                    
Flask==0.10.1                                                                                    
Flask-Bcrypt==0.6.0                                                                              
Flask-Login==0.2.11                                                                              
Flask-WTF==0.10.3                                                                                
itsdangerous==0.24                                                                               
jdcal==1.2                                                                                       
Jinja2==2.7.2                                                                                    
MarkupSafe==0.23                                                                                 
matplotlib==1.4.2                                                                                
mccabe==0.3.1                                                                                    
nose==1.3.7                                                                                      
numpy==1.9.1                                                                                     
openpyxl==2.1.4                                                                                  
pandas==0.16.0                                                                                   
peewee==2.4.4                                                                                    
pep8==1.5.7                                                                                      
Pillow==2.5.3                                                                                    
prettytable==0.7.2                                                                               
py-bcrypt==0.4                                                                                   
pyflakes==1.0.0                                                                                  
pyparsing==2.0.6                                                                                 
python-dateutil==2.4.2                                                                           
pytz==2014.7                                                                                     
requests==2.3.0                                                                                  
six==1.10.0                                                                                      
Werkzeug==0.11.2                                                                                 
WTForms==2.0.2
Mit Sengupta
Mit Sengupta
13,823 Points
Mit Sengupta
Mit Sengupta
13,823 Points

Did as you said. And then I typed in : pip freeze | grep flask . Now nothing showing up just the workspace prompt to type. Repeating the pip command resulting the same.

Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

Flask is capitalized. You need to add the switch to the command before the grep:

pip --isolated freeze | grep Flask

## or to ignore case, use -i

$ pip --isolated freeze | grep -i flask  
Flask==0.10.1  
Flask-Bcrypt==0.6.0 
Flask-Login==0.2.11  
Flask-WTF==0.10.3