# Building\_your\_Deep\_Neural\_Network\_Step\_by\_Step - C1W4 **URL:** \ **Category:** Neural Networks and Deep Learning\ **Tags:** coursera-platform\ **Created:** [September 20, 2023, 1:15am UTC](https://community.deeplearning.ai/t/building-your-deep-neural-network-step-by-step-c1w4/450310 "2023-09-20T01:15:07Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Bruno\_Cabrera](https://avatars.discourse-cdn.com/v4/letter/b/e495f1/32.png) [@Bruno\_Cabrera](https://community.deeplearning.ai/u/Bruno_Cabrera)\ **Post date:** [September 20, 2023, 1:15am UTC](https://community.deeplearning.ai/t/building-your-deep-neural-network-step-by-step-c1w4/450310/1 "2023-09-20T01:15:07Z")
Hello! Im having problems with the ex 10, this is mi code ```auto W1 = [[-0.59562069 -0.09991781 -2.14584584 1.82662008] [-1.76569676 -0.80627147 0.51115557 -1.18258802] [-1.0535704 -0.86128581 0.68284052 2.20374577]] b1 = [[-0.04659241] [-1.28888275] [0.53405496]] W2 = [[-0.55569196 0.0354055 1.32964895]] b2 = [[-0.84610769]] Error: Wrong output for variable W1. Error: Wrong output for variable b1. Error: Wrong output for variable W2. Error: Wrong output for variable b2. 2 Tests passed 1 Tests failed --------------------------------------------------------------------------- AssertionError Traceback (most recent call last) in 7 print ("b2 = "+ str(t_parameters["b2"])) 8 ----> 9 update_parameters_test(update_parameters) ~/work/release/W4A1/public_tests.py in update_parameters_test(target) 578 ] 579 #print(target(*test_cases[2]["input"])) --> 580 multiple_test(test_cases, target) 581 582 ~/work/release/W4A1/test_utils.py in multiple_test(test_cases, target) 140 print('\033[92m', success," Tests passed") 141 print('\033[91m', len(test_cases) - success, " Tests failed") --> 142 raise AssertionError("Not all tests were passed for {}. Check your equations and avoid using global variables inside the function.".format(target. __name__ )) 143 AssertionError: Not all tests were passed for update_parameters. Check your equations and avoid using global variables inside the function. ``` ---
**Author:** ![TMosh](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/tmosh/32/9321_2.png) [@TMosh](https://community.deeplearning.ai/u/TMosh)\ **Post date:** [September 20, 2023, 3:18am UTC](https://community.deeplearning.ai/t/building-your-deep-neural-network-step-by-step-c1w4/450310/2 "2023-09-20T03:18:54Z")
Your code is missing an important line: ![image](https://global.discourse-cdn.com/dlai/original/3X/1/3/13ea9b2af6fe8fe3c7bc86d5e3936486bc5fe821.png) Did you delete it? And again, please don’t post your code on the forum. Thanks! ---
**Author:** ![TMosh](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/tmosh/32/9321_2.png) [@TMosh](https://community.deeplearning.ai/u/TMosh)\ **Post date:** [September 20, 2023, 3:19am UTC](https://community.deeplearning.ai/t/building-your-deep-neural-network-step-by-step-c1w4/450310/3 "2023-09-20T03:19:47Z")
After you fix that, you’ll need to re-run all of the cells in the notebook. That’s because your code (without the deepcopy() line) was modifying a global variable from the workspace. That’s bad.