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If you get an error
NameError: name 'ok' is not defined
Solution: run the code cell that says from client.api.notebook import Notebook in it (in Lab01 this cell is in section 1.5 Submitting your work). You will need to run this cell every time you start a new Jupyter session or restart the kernel.
If you run your tests and recieve a lot of errors of the form:
NameError: name 'variable_name' is not defined
you may not have run the cells where these variables were defined. Or, you may have run the cells but then closed the session.
Solution: run the notebook from top to bottom.
Cell -> Run All
Make sure that you imported the datascience module. Run the cell that says
from datascience import *
Alternatively, you might get TypeError: 'int' object is not callable.
This error happens when the variable that we are trying to assign is not correctly defined, which means that something is off on the right side of the assignment sign.
For example, in Python, we cannot write y = 2x, because 2 is a literal and x is a variable, so we need to make sure that there is an operator between them, which in this case should be a multiplication.
Re-writing the expression as y = 2*x fixes the error.
If you start typing a variable name, press TAB on the keyboard, and nothing happens, there is probably no variable or function that starts with what you typed.
The TAB completion depends on running the previous cell where the variable or function is defined. Make sure you run that cell first, and then try again and hit TAB. Occasionally, you need to press TAB twice for it to work correctly.
Update Oct.8: We noticed that the tab completion only works within the cell in which the variable is defined. We are looking into it to see if the Jupyter notebooks got updated to remove this feature or if it is a setting that we need to change. Stay tuned!
I downloaded the notebook file but it saves as the (.ipynb.json) extension, so whenever I upload it to Gradescope, it fails.
You need to verify that the extension of the saved notebook file is .ipynb.
Occasionally, your operating system will rename it to be .ipynb.json, so you need to change it into .ipynb with nothing following it.
Update Oct.14: If the above doesn't work (for example, if Gradescope adds the .ipynb.json extension even if you saved it with .ipynb), try using a different browser. For students with Mac laptops who were using Safari, the following fixed the issue:
- Open the notebook in Google Chrome
- Follow the steps about saving and downloading at the bottom of the lab
- If asked which application it should use to open the file when you are downloading it select textEdit (if you don't have textEdit try others until it works)
Verify that you are registering for the correct section of the class. You can try registering for another section and see if it works. Note: You can go ahead and attend the lab session that works best for you; no need to switch the registration.
If you are running into a different issue, send an email to the CS Undergraduate Advisor (ugradhelp @ cs.ucsb.edu) to see if we can get some explanation and/or assistance with this issue and CC Prof. K on your email. Make sure to include your PERM number in that email.
Lecture recordings will be linked on the Schedule page for each corresponding lecture.
If we are in Weeks 1-2 and you don't see the recordings, that means we haven't been able to upload them just yet. Please, don't email us or post on Piazza asking about the recordings, doing so will not make them appear any faster, since we are trying our best to get them uploaded as quickly as we are able (and as our Internet allows).
We apologize for any inconvenience the delay might have caused. We thank you for your patience and understanding.
Please make sure that you are registered for this course on GOLD.
If you are having an issue with your registration, see the question above about adding this course on GOLD.
If you verified that you are enrolled in this course, send Prof. K an email including [DS 1] in the subject line and letting her know that you need to be added to Piazza and/or Gradescope.
Make sure that you created your account using @umail.ucsb.edu (not @ucsb.edu).
SBCC students: check which address the Gradescope email was sent to; verify that you are using the email that was in the Gradescope's "To:" field.
Make sure that you created your account using @umail.ucsb.edu (not @ucsb.edu).
SBCC students: check which address the Piazza email was sent to; verify that you are using the email that was in the Piazza's "To:" field.
If you have multiple accounts on Piazza with different email addresses, you can add them to you account to merge the accounts:
- (using the browser on the computer), Click the cogwheel in the upper-right corner of the window
- select "Account/Email Settings"
- add your email under "Other emails".
Yes, your latest submission will be the one that's used for grading.