check for build and venv dirs

pype/cli.py

@@ -23,6 +23,7 @@ def main(ctx):
 @main.command()
 @click.option("-d", "--dev", is_flag=True, help="Settings in Dev mode")
 def settings(dev=False):
+    """Show Pype Settings UI."""
     PypeCommands().launch_settings_gui(dev)
 
 
@@ -280,7 +281,7 @@ def generate_zip(path):
         allow_extra_args=True))
 @click.argument("script", required=True, type=click.Path(exists=True))
 def run(script):
-    """Run python script."""
+    """Run python script in Pype context."""
     import runpy
 
     if not script:

tools/build.ps1

@@ -98,9 +98,22 @@ if (-not $pype_version) {
   Exit-WithCode 1
 }
 
+# Create build directory if not exist
+if (-not (Test-Path -PathType Container -Path "$($pype_root)\build")) {
+    New-Item -ItemType Directory -Force -Path "$($pype_root)\build"
+}
+
 Write-Host "--- " -NoNewline -ForegroundColor yellow
 Write-Host "Cleaning build directory ..."
-Remove-Item -Recurse -Force "$($pype_root)\build\*"
+try {
+    Remove-Item -Recurse -Force "$($pype_root)\build\*"
+}
+catch {
+    Write-Host "!!! " -NoNewline -ForegroundColor Red
+    Write-Host "Cannot clean build directory, possibly because process is using it."
+    Write-Host $_.Exception.Message
+    Exit-WithCode 1
+}
 
 Write-Host ">>> " -NoNewline -ForegroundColor green
 Write-Host "Building Pype [ " -NoNewline -ForegroundColor white

tools/create_env.ps1

@@ -87,9 +87,24 @@ if(($matches[1] -lt 3) -or ($matches[2] -lt 7)) {
 }
 Write-Host "OK [ $p ]" -ForegroundColor green
 
+# Create venv directory if not exist
+if (-not (Test-Path -PathType Container -Path "$($pype_root)\venv")) {
+    New-Item -ItemType Directory -Force -Path "$($pype_root)\venv"
+}
+
 Write-Host "--- " -NoNewline -ForegroundColor yellow
 Write-Host "Cleaning venv directory ..."
-Remove-Item -Recurse -Force "$($pype_root)\venv\*"
+
+try {
+    Remove-Item -Recurse -Force "$($pype_root)\venv\*"
+}
+catch {
+    Write-Host "!!! " -NoNewline -ForegroundColor red
+    Write-Host "Cannot clean venv directory, possibly another process is using it."
+    Write-Host $_.Exception.Message
+    Exit-WithCode 1
+}
+
 
 Write-Host ">>> " -NoNewline -ForegroundColor green
 Write-Host "Creating virtual env ..."