Unable to pass an assignment due to test cells

I am stuck on the Week 2 assignment of Logistic Regressions.
I am getting the Assertion error again and again.

[ValidateApp | INFO] Validating ‘/home/jovyan/work/submitted/courseraLearner/W2A2/Logistic_Regression_with_a_Neural_Network_mindset.ipynb’
[ValidateApp | INFO] Executing notebook with kernel: python3
[ValidateApp | ERROR] Timeout waiting for execute reply (30s).
[ValidateApp | ERROR] Interrupting kernel
[ValidateApp | ERROR] Timeout waiting for execute reply (30s).
[ValidateApp | ERROR] Interrupting kernel
Tests failed on 2 cell(s)! These tests could be hidden. Please check your submission.

The following cell failed:

dim = 2
w, b = initialize_with_zeros(dim)

assert type(b) == float
print ("w = " + str(w))
print ("b = " + str(b))


The error was:

AssertionError                            Traceback (most recent call last)
<ipython-input-11-4f77d2aa60f4> in <module>
      2 w, b = initialize_with_zeros(dim)
----> 4 assert type(b) == float
      5 print ("w = " + str(w))
      6 print ("b = " + str(b))


The following cell failed:

from public_tests import *


The error was:

AssertionError                            Traceback (most recent call last)
<ipython-input-19-9408a3dffbf6> in <module>
      1 from public_tests import *
----> 3 model_test(model)

~/work/submitted/courseraLearner/W2A2/public_tests.py in model_test(target)
    117     assert type(d['costs']) == list, f"Wrong type for d['costs']. {type(d['...
    118     assert len(d['costs']) == 1, f"Wrong length for d['costs']. {len(d['cos...
--> 119     assert np.allclose(d['costs'], expected_output['costs']), f"Wrong value...
    121     assert type(d['w']) == np.ndarray, f"Wrong type for d['w']. {type(d['w'...

AssertionError: Wrong values for d['costs']. [array(0.15900538)] != [array(0.693147...

What should I do now?

Hi @pragatisharma,

I have moved this post to the DLS Course 1 category as other learners taking the same course might benefit from this.

Kindly make sure if you have any course-specific queries, explore the specialization category and post in the relevant course subcategory as course-specific mentors are actively answering the queries there. The General Discussions category is not monitored by our mentors.

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Happy Learning!!

hi @pragatisharma , welcome to the discourse community. As a quick note, it is practice not to post solutions on the platform, so I have removed your solution from the post. The error you get is actually quite common. The system is checking whether your parameter b is of data type float, so with numbers of both sides of the decimal. By initializing with b = 0 (in you above code snipit), you actually initialize it as an integer. So what do you need to do to make sure b is of type float?
Hope this helps you in finding the right solution.