# TF Developer Professional Certificate Resources **URL:** https://community.deeplearning.ai/c/course-q-a/tensorflow-developer-professional/tf1-resources/78.md [Latest](https://community.deeplearning.ai/latest.md) · [Categories](https://community.deeplearning.ai/categories.md) · [Tags](https://community.deeplearning.ai/tags.md) --- ## [TF1: Assignment Troubleshooting Tips](https://community.deeplearning.ai/t/tf1-assignment-troubleshooting-tips/181320)
**Author:** [@chris.favila](https://community.deeplearning.ai/u/chris.favila)\ **Replies:** 1\ **Last updated:** [March 20, 2023, 6:00am UTC](https://community.deeplearning.ai/t/tf1-assignment-troubleshooting-tips/181320 "2023-03-20T06:00:02Z")
Here are some general guidelines before submitting your assignments in this specialization. Please take note of the course numbers each tip is applicable to: \[Courses 1, 3 (except Week 4), and 4\]: Please save your wor… --- ## [TF1 Course 3: Lecture Notes](https://community.deeplearning.ai/t/tf1-course-3-lecture-notes/124248)
**Author:** [@chris.favila](https://community.deeplearning.ai/u/chris.favila)\ **Replies:** 0\ **Last updated:** [May 2, 2022, 5:47am UTC](https://community.deeplearning.ai/t/tf1-course-3-lecture-notes/124248 "2022-05-02T05:47:57Z")
Lecture notes for C3 - Natural Language Processing in Tensorflow of the Tensorflow Developer Professional Specialization Note: These slides haven’t been maintained and you might find missing topics and incorrect informa… --- ## [TF1 Course 2: Lecture Notes](https://community.deeplearning.ai/t/tf1-course-2-lecture-notes/124229)
**Author:** [@chris.favila](https://community.deeplearning.ai/u/chris.favila)\ **Replies:** 0\ **Last updated:** [May 2, 2022, 3:14am UTC](https://community.deeplearning.ai/t/tf1-course-2-lecture-notes/124229 "2022-05-02T03:14:27Z")
Lecture notes for C2 - Convolutional Neural Networks in Tensorflow of the Tensorflow Developer Professional Specialization Note: These slides haven’t been maintained and you might find missing topics and incorrect infor… --- ## [TF1 Course 1: Lecture Notes](https://community.deeplearning.ai/t/tf1-course-1-lecture-notes/124222)
**Author:** [@chris.favila](https://community.deeplearning.ai/u/chris.favila)\ **Replies:** 0\ **Last updated:** [May 2, 2022, 2:29am UTC](https://community.deeplearning.ai/t/tf1-course-1-lecture-notes/124222 "2022-05-02T02:29:48Z")
Lecture notes for C1 - Introduction to TensorFlow for Artificial Intelligence, Machine Learning, and Deep Learning of the Tensorflow Developer Professional Specialization Note: These slides haven’t been maintained and y… --- ## [TF1 Course 4: Lecture Notes](https://community.deeplearning.ai/t/tf1-course-4-lecture-notes/121711)
**Author:** [@chris.favila](https://community.deeplearning.ai/u/chris.favila)\ **Replies:** 0\ **Last updated:** [April 23, 2022, 10:00am UTC](https://community.deeplearning.ai/t/tf1-course-4-lecture-notes/121711 "2022-04-23T10:00:03Z")
Lecture notes for C4 - Sequences, Time Series and Prediction of the Tensorflow Developer Professional Specialization Note: These slides haven’t been maintained and you might find missing topics and incorrect information… --- ## [About the TF Developer Professional Certificate Resources category](https://community.deeplearning.ai/t/about-the-tf-developer-professional-certificate-resources-category/24943)
**Author:** [@agparth](https://community.deeplearning.ai/u/agparth)\ **Replies:** 0\ **Last updated:** [August 3, 2021, 4:58pm UTC](https://community.deeplearning.ai/t/about-the-tf-developer-professional-certificate-resources-category/24943 "2021-08-03T16:58:25Z")
In the Resources category everyone is encouraged to share resources related to the world of Deeplearning.ai Tensorflow Developer Professional. Whether it is your own research, something interesting, cutting edge or somet… --- ## [Inquiry Regarding Access to TensorFlow Developer Professional Specialization](https://community.deeplearning.ai/t/inquiry-regarding-access-to-tensorflow-developer-professional-specialization/882636)
**Author:** [@MohamedAliZouariAi](https://community.deeplearning.ai/u/MohamedAliZouariAi)\ **Replies:** 1\ **Last updated:** [November 3, 2025, 2:30pm UTC](https://community.deeplearning.ai/t/inquiry-regarding-access-to-tensorflow-developer-professional-specialization/882636 "2025-11-03T14:30:53Z")
Dear DeepLearning.AI Support Team, I am currently a monthly subscriber on the DeepLearning.AI platform. I am trying to enroll in the “TensorFlow Developer Professional” specialization but have been unable to access it. … --- ## [Markdown bug in Course 1 Week 4 Experiment with the horse or human classifier (Lab 1)](https://community.deeplearning.ai/t/markdown-bug-in-course-1-week-4-experiment-with-the-horse-or-human-classifier-lab-1/880231)
**Author:** [@carlosmorillo](https://community.deeplearning.ai/u/carlosmorillo)\ **Replies:** 1\ **Last updated:** [September 26, 2025, 5:43pm UTC](https://community.deeplearning.ai/t/markdown-bug-in-course-1-week-4-experiment-with-the-horse-or-human-classifier-lab-1/880231 "2025-09-26T17:43:42Z")
Minor bug. Markdown says batch size is 128 but the actual code has 32. --- ## [Specilization Certificate](https://community.deeplearning.ai/t/specilization-certificate/877967)
**Author:** [@Mojad1](https://community.deeplearning.ai/u/Mojad1)\ **Replies:** 4\ **Last updated:** [August 29, 2025, 6:36am UTC](https://community.deeplearning.ai/t/specilization-certificate/877967 "2025-08-29T06:36:01Z")
I have completed a specilization course but the certififcate does not show for the specialization. Although, I do have the certificates for the courses in it but not the specialization. My name is verified and I have che… --- ## [C1\_W4\_Lab\_2](https://community.deeplearning.ai/t/c1-w4-lab-2/662137)
**Author:** [@avinil](https://community.deeplearning.ai/u/avinil)\ **Replies:** 3\ **Last updated:** [August 12, 2024, 10:51pm UTC](https://community.deeplearning.ai/t/c1-w4-lab-2/662137 "2024-08-12T22:51:05Z")
Hello, I am getting the following error. Please help. Epoch 1/15 8/8 ━━━━━━━━━━━━━━━━━━━━ 22s 2s/step - accuracy: 0.4979 - loss: 0.7005 - val\_accuracy: 0.5000 - val\_loss: 1.5893 Epoch 2/15 1/8 ━━━━━━━━━━━━━━━━━━━━ 14s 2… --- ## [Does Epoch matter in Exam?](https://community.deeplearning.ai/t/does-epoch-matter-in-exam/638562)
**Author:** [@JoeDL](https://community.deeplearning.ai/u/JoeDL)\ **Replies:** 9\ **Last updated:** [May 31, 2024, 7:31pm UTC](https://community.deeplearning.ai/t/does-epoch-matter-in-exam/638562 "2024-05-31T19:31:29Z")
In the exam, When I trained 10 epochs and submitted, I got 1/5 marks. And when I put 20 epochs, I got 2/5 marks. If I had put 100 epochs would I have got more marks? I am not sure if I changed any code between 10 and 20 … --- ## [TF1 Course 1: Printer-Friendly Lecture Notes Available](https://community.deeplearning.ai/t/tf1-course-1-printer-friendly-lecture-notes-available/285012)
**Author:** [@am003e](https://community.deeplearning.ai/u/am003e)\ **Replies:** 1\ **Last updated:** [May 7, 2024, 4:58pm UTC](https://community.deeplearning.ai/t/tf1-course-1-printer-friendly-lecture-notes-available/285012 "2024-05-07T16:58:30Z")
Hi All, I have found it easiest to learn when I take pen or pencil notes directly on printouts of slides (e.g. 2-4 slides per page) shown in the lectures. The TF1 Course 1 lecture notes (see here) often include black ba… --- ## [Course 4: Week 2 Assignment, error while splitting the objects](https://community.deeplearning.ai/t/course-4-week-2-assignment-error-while-splitting-the-objects/572425)
**Author:** [@Asit\_Kumar\_Panda](https://community.deeplearning.ai/u/Asit_Kumar_Panda)\ **Replies:** 2\ **Last updated:** [April 23, 2024, 3:38pm UTC](https://community.deeplearning.ai/t/course-4-week-2-assignment-error-while-splitting-the-objects/572425 "2024-04-23T15:38:43Z")
Hi, I am in currently in Sequences, Time series and Prediction course in coursera. while doing the assignment, i stumbled upon a basic error while splitting the windowed dataset into training and testing after shuffli… --- ## [C2W1\_Assignment, Accuracy constant at 0.5](https://community.deeplearning.ai/t/c2w1-assignment-accuracy-constant-at-0-5/523520)
**Author:** [@Soumya\_Banerjee1](https://community.deeplearning.ai/u/Soumya_Banerjee1)\ **Replies:** 2\ **Last updated:** [December 20, 2023, 8:41pm UTC](https://community.deeplearning.ai/t/c2w1-assignment-accuracy-constant-at-0-5/523520 "2023-12-20T20:41:29Z")
I am trying to solve Cats vs. Dogs hands on exercise, but strangely both my training accuracy and validation accuracy are stuck at 0.5 --- ## [Code for Week 4 Lab 1 if u run locally and not on colab](https://community.deeplearning.ai/t/code-for-week-4-lab-1-if-u-run-locally-and-not-on-colab/519171)
**Author:** [@Igor\_Lessio](https://community.deeplearning.ai/u/Igor_Lessio)\ **Replies:** 2\ **Last updated:** [December 15, 2023, 6:37am UTC](https://community.deeplearning.ai/t/code-for-week-4-lab-1-if-u-run-locally-and-not-on-colab/519171 "2023-12-15T06:37:04Z")
Hi everyone ! I run all locally so i had to workout a function to check the images locally. import numpy as np from tkinter import filedialog from tkinter import Tk from keras.preprocessing import image import os d… --- ## [Callback Assignment](https://community.deeplearning.ai/t/callback-assignment/494429)
**Author:** [@Philani\_Hlophe](https://community.deeplearning.ai/u/Philani_Hlophe)\ **Replies:** 18\ **Last updated:** [November 20, 2023, 2:12pm UTC](https://community.deeplearning.ai/t/callback-assignment/494429 "2023-11-20T14:12:38Z")
Hello. When I run by callback, the return history code is giving me SyntaxError: ‘return’ outside function. Can someone please help me on what I am doing wrong. My callback is giving me Reached 99% accuracy so cancellin… --- ## [C2T4: Grade explanation](https://community.deeplearning.ai/t/c2t4-grade-explanation/470877)
**Author:** [@danielden](https://community.deeplearning.ai/u/danielden)\ **Replies:** 7\ **Last updated:** [October 18, 2023, 8:30am UTC](https://community.deeplearning.ai/t/c2t4-grade-explanation/470877 "2023-10-18T08:30:46Z")
Hi, i uploaded my notebook file with the model achieved training accuracy more than 99% and the validation accuracy more than 98%. During the development, i used the following lines for ensuring the categorical model… --- ## [Uploading Assignment Solutions on Github](https://community.deeplearning.ai/t/uploading-assignment-solutions-on-github/463095)
**Author:** [@OmarElgammal](https://community.deeplearning.ai/u/OmarElgammal)\ **Replies:** 4\ **Last updated:** [October 5, 2023, 5:36pm UTC](https://community.deeplearning.ai/t/uploading-assignment-solutions-on-github/463095 "2023-10-05T17:36:03Z")
Is it allowed to put my assignment solutions in a public github repository? --- ## [TF1 - C2 - W4 - Unexpected model](https://community.deeplearning.ai/t/tf1-c2-w4-unexpected-model/262204)
**Author:** [@Benny\_Segers](https://community.deeplearning.ai/u/Benny_Segers)\ **Replies:** 7\ **Last updated:** [September 16, 2023, 4:19am UTC](https://community.deeplearning.ai/t/tf1-c2-w4-unexpected-model/262204 "2023-09-16T04:19:53Z")
Hello, I was able to solve C2W4\_Assignment.ipynb, but the model is not what is expected by the verification. The assignment is to classify 28x28 images of hands depicting the 26 letters of the english alphabet. The las… --- ## [TF Developer - Course 1 Week 1](https://community.deeplearning.ai/t/tf-developer-course-1-week-1/442399)
**Author:** [@Dave6](https://community.deeplearning.ai/u/Dave6)\ **Replies:** 1\ **Last updated:** [September 11, 2023, 12:40pm UTC](https://community.deeplearning.ai/t/tf-developer-course-1-week-1/442399 "2023-09-11T12:40:51Z")
Hey guys! Trying to submit my code for the Course 1 week 1 assignment for the TensorFlow developer. I fiddled with my code in a separate Google Colab sheet and it works and is bringing back the number \[\[4.0013647\]\] whi… --- ## [My laptop isn't powerful](https://community.deeplearning.ai/t/my-laptop-isnt-powerful/433941)
**Author:** [@Dharamraj\_Tiwari](https://community.deeplearning.ai/u/Dharamraj_Tiwari)\ **Replies:** 7\ **Last updated:** [September 2, 2023, 3:18pm UTC](https://community.deeplearning.ai/t/my-laptop-isnt-powerful/433941 "2023-09-02T15:18:49Z")
My laptop does not have a GPU so can I use Azure notebooks to make the model? The handbook says that we can experiment with models on cloud and need to define, train and save models in PyCharm. --- ## [Welcome to course 2 of DeepLearning.AI TensorFlow Developer Professional Certificate Specialization](https://community.deeplearning.ai/t/welcome-to-course-2-of-deeplearning-ai-tensorflow-developer-professional-certificate-specialization/425918)
**Author:** [@Doug\_Epling](https://community.deeplearning.ai/u/Doug_Epling)\ **Replies:** 6\ **Last updated:** [August 24, 2023, 1:06pm UTC](https://community.deeplearning.ai/t/welcome-to-course-2-of-deeplearning-ai-tensorflow-developer-professional-certificate-specialization/425918 "2023-08-24T13:06:11Z")
I would be extremely proud to get this Certificate even if it was useless to me in terms of ROI. But I have noticed so far in this course one deprecated Tensorflow module used in the Lab 1 and a Python module that is no… --- ## [Activation\_model](https://community.deeplearning.ai/t/activation-model/422657)
**Author:** [@saiman](https://community.deeplearning.ai/u/saiman)\ **Replies:** 3\ **Last updated:** [August 20, 2023, 6:37am UTC](https://community.deeplearning.ai/t/activation-model/422657 "2023-08-20T06:37:11Z")
Hello In the Ungraded lab of week 3(course 1), there is a code line : activation\_model = tf.keras.models.Model(inputs = model.input, outputs = layer\_outputs) i don’t get it. because here we are defining a new model. e… --- ## [Guidance after this course](https://community.deeplearning.ai/t/guidance-after-this-course/418863)
**Author:** [@Adhi\_Vp](https://community.deeplearning.ai/u/Adhi_Vp)\ **Replies:** 1\ **Last updated:** [August 16, 2023, 4:45am UTC](https://community.deeplearning.ai/t/guidance-after-this-course/418863 "2023-08-16T04:45:15Z")
Hey, this specialization was wonderful, can anyone suggest me which specialization to choose after this one ?(Advanced tensorflow…/Deployment tensorflow…) --- ## [C2\_W3\_Lab\_1\_transfer\_learning Question](https://community.deeplearning.ai/t/c2-w3-lab-1-transfer-learning-question/413197)
**Author:** [@Nick\_VN](https://community.deeplearning.ai/u/Nick_VN)\ **Replies:** 1\ **Last updated:** [August 9, 2023, 6:26pm UTC](https://community.deeplearning.ai/t/c2-w3-lab-1-transfer-learning-question/413197 "2023-08-09T18:26:59Z")
In this jupyter notebook we are taking the inception\_v3 model, removing its final layers and replacing them with our own DNN. What confuses me is how we are doing this exactly. see: https://github.com/https-deeplearning… --- ## [Course 2, Week 1: split\_data function 'No such file or directory' error](https://community.deeplearning.ai/t/course-2-week-1-split-data-function-no-such-file-or-directory-error/403711)
**Author:** [@nickgutierrez](https://community.deeplearning.ai/u/nickgutierrez)\ **Replies:** 1\ **Last updated:** [August 1, 2023, 12:32am UTC](https://community.deeplearning.ai/t/course-2-week-1-split-data-function-no-such-file-or-directory-error/403711 "2023-08-01T00:32:47Z")
My plan in this assignment was to create a list, called dir, from the source directory, randomize the files in that list, then get rid of all files of size 0. Somewhere along the way, I seem to be losing track of the fil… --- ## [Issue submitting the first assignment C1\_W1](https://community.deeplearning.ai/t/issue-submitting-the-first-assignment-c1-w1/400558)
**Author:** [@ramchandra\_dhungana](https://community.deeplearning.ai/u/ramchandra_dhungana)\ **Replies:** 6\ **Last updated:** [July 28, 2023, 10:34pm UTC](https://community.deeplearning.ai/t/issue-submitting-the-first-assignment-c1-w1/400558 "2023-07-28T22:34:02Z")
I have issue submitting my first assignment C1\_W1 in TensorFlow developer certification. every time I submit the assignment, the grade is showing zero. I am not able to fix the issue. Can anyone help? I’d appreciate. Tha… --- ## [Error When Running Cleanup Cell in Week 4 Lab 3(Introduction to Tensorflow)](https://community.deeplearning.ai/t/error-when-running-cleanup-cell-in-week-4-lab-3-introduction-to-tensorflow/373794)
**Author:** [@Eric\_Du1](https://community.deeplearning.ai/u/Eric_Du1)\ **Replies:** 1\ **Last updated:** [July 24, 2023, 8:28pm UTC](https://community.deeplearning.ai/t/error-when-running-cleanup-cell-in-week-4-lab-3-introduction-to-tensorflow/373794 "2023-07-24T20:28:58Z")
import os, signal os.kill(os.getpid(), signal.SIGKIL Having issues when running the code above. Google colab states “Your session crashed for an unknown reason”. --- ## [C4W3 - RNN output notation bug](https://community.deeplearning.ai/t/c4w3-rnn-output-notation-bug/393324)
**Author:** [@Andriy\_Utkin](https://community.deeplearning.ai/u/Andriy_Utkin)\ **Replies:** 1\ **Last updated:** [July 22, 2023, 3:20pm UTC](https://community.deeplearning.ai/t/c4w3-rnn-output-notation-bug/393324 "2023-07-22T15:20:37Z")
In videos “Conceptual overview”, “Shape of the inputs to the RNN” Laurence calls output of RNN cells “Y”, even though the slides he’s talking through show a hat “^” above each Y. Nowhere in that week’s materials (videos… --- ## [C4W4 - Time Series Prediction for future 5 days](https://community.deeplearning.ai/t/c4w4-time-series-prediction-for-future-5-days/384532)
**Author:** [@Jack\_Shu](https://community.deeplearning.ai/u/Jack_Shu)\ **Replies:** 5\ **Last updated:** [July 14, 2023, 4:08am UTC](https://community.deeplearning.ai/t/c4w4-time-series-prediction-for-future-5-days/384532 "2023-07-14T04:08:26Z")
In the Course 4 Week 4 Assignment, it gives prediction of the next day temperature. How do I change the model to predict the next 5 consecutive days’ temperatures with the past 20 days temperatures? Thank you! [Next page](https://community.deeplearning.ai/c/course-q-a/tensorflow-developer-professional/tf1-resources/78.md?page=1)