# C1\_W3\_Assignment Assertion Error Help Please **URL:** \ **Category:** Linear Algebra for Machine Learning and Data Sc...\ **Tags:** week-module-3\ **Created:** [February 15, 2023, 12:02pm UTC](https://community.deeplearning.ai/t/c1-w3-assignment-assertion-error-help-please/274538 "2023-02-15T12:02:27Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![James9](https://avatars.discourse-cdn.com/v4/letter/j/c0e974/32.png) [@James9](https://community.deeplearning.ai/u/James9)\ **Post date:** [February 15, 2023, 12:02pm UTC](https://community.deeplearning.ai/t/c1-w3-assignment-assertion-error-help-please/274538/1 "2023-02-15T12:02:27Z")
## Y\_hat 0.5173733862619162 n\_x 1 X.shape[1] 30 AssertionError Traceback (most recent call last) in ----\> 1 Y\_hat = forward\_propagation(X, parameters) 2 3 print(Y\_hat) in forward\_propagation(X, parameters) 36 print (“X.shape[1]”) 37 print (X.shape[1]) —\> 38 assert(Y\_hat.shape == (n\_x, X.shape[1])) 39 return Y\_hat The values if n\_x and X.shape[1] is ok, bit the assert function has an error ---
**Author:** ![bs80](https://avatars.discourse-cdn.com/v4/letter/b/7ea924/32.png) [@bs80](https://community.deeplearning.ai/u/bs80)\ **Post date:** [February 15, 2023, 12:46pm UTC](https://community.deeplearning.ai/t/c1-w3-assignment-assertion-error-help-please/274538/2 "2023-02-15T12:46:29Z")
If your n\_x of 1 and X.shape[1] of 30 are correct, then your Y\_hat needs to be of shape (1, 30). The Y\_hat value that you printed out looks like a scalar. ---
**Author:** ![James9](https://avatars.discourse-cdn.com/v4/letter/j/c0e974/32.png) [@James9](https://community.deeplearning.ai/u/James9)\ **Post date:** [February 15, 2023, 12:49pm UTC](https://community.deeplearning.ai/t/c1-w3-assignment-assertion-error-help-please/274538/3 "2023-02-15T12:49:58Z")
I printed the Y\_hat value before the assert function. ---
**Author:** ![James9](https://avatars.discourse-cdn.com/v4/letter/j/c0e974/32.png) [@James9](https://community.deeplearning.ai/u/James9)\ **Post date:** [February 15, 2023, 12:52pm UTC](https://community.deeplearning.ai/t/c1-w3-assignment-assertion-error-help-please/274538/4 "2023-02-15T12:52:33Z")
There seems to be no reason that the assert function should not work with : Y\_hat = 0.517… n\_x = 1 X.shape[1] = 30 ---
**Author:** ![bs80](https://avatars.discourse-cdn.com/v4/letter/b/7ea924/32.png) [@bs80](https://community.deeplearning.ai/u/bs80)\ **Post date:** [February 15, 2023, 1:37pm UTC](https://community.deeplearning.ai/t/c1-w3-assignment-assertion-error-help-please/274538/5 "2023-02-15T13:37:17Z")
Your Y\_hat does not look like a 1×30 array.