diff --git a/Challenges.py b/Challenges.py
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+++ b/Challenges.py
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+"""
+The Python "AttributeError: 'tuple' object has no attribute" occurs when we access an attribute that doesn't exist on a tuple.
+
+"""
+# ==============================================
+
+"""
+How to use Import in Terraform 
+    terrform import 
+    terraform import aws_codebuild_project.banking_customer_churn_prediction_project banking_customer_churn_prediction_project
+
+output- 
+    resource "aws_codebuild_project" "banking_customer_churn_prediction_project" {
+    # (resource arguments)
+    }
+copy the output in a file and run the same import command again.
+
+teraform plan --> it shows that "1 to destroy"
+
+terraform show --> It will show the list of all the resources that we have created in AWS with all the parameters.
+
+We can copy the details of code build and save it for our reference.
+
+"""
+# ======================================================================================
+# Other Terraform Commands
+# ======================================================================================
+"""
+Terraform Commands-
+    terraform console -> will get you into terraform CLI where we can test out our codes
+        -> aws_codecommit_repository.banking_customer_churn_prediction_repo
+        This will give all the details related to the particular resources
+        
+    terraform init
+    terraform plan
+    terraform apply
+    terraform fmt
+    terraform state list
+        aws_codecommit_repository.banking_customer_churn_prediction_repo
+        aws_ecr_repository.banking_customer_churn_ecr_repo
+        aws_s3_bucket.terraform-backend-banking-churn-prediction-app
+        
+    terraform apply -target="aws_ecr_repository.banking_customer_churn_ecr_repo" 
+        --> it will only create this resources
+        --> we can also add multiple target resources
+    
+"""
+    1. Build failed due to below errors -  YAML_FILE_ERROR Message: Invalid buildspec phase name: artifacts.
+       - Corrected the Identation in the buildspec.yml file.
+    
+    2. An error occurred (AccessDeniedException) when calling the GetAuthorizationToken operation: 
+       User: arn:aws:sts::XXXXXXXX:assumed-role/banking-customer-churn-codebuild-service-role/
+       AWSCodeBuild-886ba1b7-1274-498e-a6f2-83f325dac60a is not authorized to perform: ecr:GetAuthorizationToken 
+       on resource: * because no identity-based policy allows the ecr:GetAuthorizationToken action
+       
+       - Attached AmazonElasticContainerRegistryPublicPowerUser policy to the service role -> banking-customer-churn-codebuild-service-role
+"""
+
+application_url = "http://banking-customer-churn-alb-761037886.us-east-1.elb.amazonaws.com"
+churn_repo_clone_url_http = "https://git-codecommit.us-east-1.amazonaws.com/v1/repos/banking_customer_churn_repo"
+churn_repo_clone_url_ssh = "ssh://git-codecommit.us-east-1.amazonaws.com/v1/repos/banking_customer_churn_repo"
+
+code_pipeline_service_role = "arn:aws:iam::959999474169:role/codepipeline_service_role"
+
+
+import aws_codedeploy_app.banking-customer-churn-app banking-customer-churn-app
+
+terraform import aws_codedeploy_deployment_group.banking-customer-churn-app-deploy banking-customer-churn-app:banking-customer-churn-app-deploy
+"""
+
+"""
+    Testing the application in local using docker image
+    
+    docker system prune --volumes -a -f 
+    
+    docker build -t banking-churn-prediction-image . 
+
+    docker run -dp 5000:5000 bankingcustomerchurnprediction
+        
+    docker logs [container id]
+    
+    docker ps -a
+    
+    docker stop 
+"""
+
+
+https://git-codecommit.us-east-1.amazonaws.com/v1/repos/banking_customer_churn_repo
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