New Python template without pipenv

Closes #327

Author: cmclaughlin

docs/getting-started/python.md

@@ -5,7 +5,7 @@
 - [Terraform](https://www.terraform.io/downloads.html) >= v0.12
 - [Node.js](https://nodejs.org) >= v12.16
 - [Python](https://www.python.org/downloads/) >= v3.7
-- [Pipenv](https://pipenv.pypa.io/en/latest/install/#installing-pipenv/)
+- Optional: [Pipenv](https://pipenv.pypa.io/en/latest/install/#installing-pipenv/) (see below)
 
 ### Install CDK for Terraform CLI
 
@@ -20,9 +20,24 @@ Learn more how to use the cdktf command-line interface [here](../cli-commands.md
 ```bash
 mkdir hello-terraform
 cd hello-terraform
+```
+
+There are two Python templates available that you can choose from.
+The `python` template uses `Pipenv` for package management wheras the
+`python-pip` template just uses `pip` with a simple `requirements.txt` file.
+
+Here's how to choose between the two
+
+### pipenv
+```bash
 cdktf init --template="python" --local
 ```
 
+### pip
+```bash
+cdktf init --template="python-pip" --local
+```
+
 This will initialize a brand new CDK for Terraform project in Python using an interactive command.
 
 ```bash

packages/cdktf-cli/templates/python-pip/.hooks.sscaff.js

@@ -0,0 +1,53 @@
+const { execSync } = require('child_process');
+const { chmodSync } = require('fs');
+const { readFileSync, writeFileSync } = require('fs');
+
+const cli = require.resolve('../../bin/cdktf');
+
+exports.pre = () => {
+  try {
+    execSync('which pip')
+  } catch {
+    console.error(`Unable to find "pip".`)
+    process.exit(1);
+  }
+};
+
+exports.post = options => {
+  // Terraform Cloud configuration settings if the organization name and workspace is set.
+  if (options.OrganizationName != '') {
+    console.log(`\nGenerating Terraform Cloud configuration for '${options.OrganizationName}' organization and '${options.WorkspaceName}' workspace.....`)
+    terraformCloudConfig(options.$base, options.OrganizationName, options.WorkspaceName)
+  }
+
+  const pypi_cdktf = options.pypi_cdktf;
+  if (!pypi_cdktf) {
+    throw new Error(`missing context "pypi_cdktf"`);
+  }
+
+  writeFileSync('requirements.txt', pypi_cdktf, 'utf-8');
+  execSync('pip install -r requirements.txt', { stdio: 'inherit' });
+  chmodSync('main.py', '700');
+
+  execSync(`${cli} get`, { stdio: 'inherit' });
+  execSync(`python3 ./main.py`);
+
+  console.log(readFileSync('./help', 'utf-8'));
+};
+
+function terraformCloudConfig(baseName, organizationName, workspaceName) {
+  template = readFileSync('./main.py', 'utf-8');
+
+  const result = template.replace(`MyStack(app, "${baseName}")`, `stack = MyStack(app, "${baseName}")
+stack.add_override('terraform.backend', {
+  'remote': {
+    'hostname': 'app.terraform.io',
+    'organization': '${organizationName}',
+    'workspaces': {
+      'name': '${workspaceName}'
+    }
+  }
+})`);
+
+  writeFileSync('./main.py', result, 'utf-8');
+}

packages/cdktf-cli/templates/python-pip/cdktf.json

@@ -0,0 +1,6 @@
+{
+  "language": "python",
+  "app": "python3 ./main.py",
+  "terraformProviders": ["aws@~> 2.0"],
+  "codeMakerOutput": "imports"
+}

packages/cdktf-cli/templates/python-pip/help

@@ -0,0 +1,22 @@
+========================================================================================================
+
+  Your cdktf Python project is ready!
+
+  cat help                Prints this message
+
+  Compile:
+    python3 ./main.py     Compile and run the python code.
+
+  Synthesize:
+    cdktf synth           Synthesize Terraform resources to cdktf.out/
+
+  Diff:
+    cdktf diff            Perform a diff (terraform plan) for the given stack
+
+  Deploy:
+    cdktf deploy          Deploy the given stack
+
+  Destroy:
+    cdktf destroy         Destroy the given stack
+
+========================================================================================================

packages/cdktf-cli/templates/python-pip/main.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+from constructs import Construct
+from cdktf import App, TerraformStack
+
+
+class MyStack(TerraformStack):
+    def __init__(self, scope: Construct, ns: str):
+        super().__init__(scope, ns)
+
+        # define resources here
+
+
+app = App()
+MyStack(app, "{{ $base }}")
+
+app.synth()

packages/cdktf-cli/templates/python-pip/{{}}.gitignore

@@ -0,0 +1,6 @@
+dist/
+imports/*
+!imports/__init__.py
+.terraform
+cdktf.out
+terraform.tfstate*