adding tasks

Author: Eric Kolve

tasks.py

@@ -0,0 +1,43 @@
+from invoke import task
+import subprocess
+import os
+import requests
+
+
+
+@task
+def build_pip(context):
+    import xml.etree.ElementTree as ET 
+    res = requests.get('https://test.pypi.org/rss/project/ekolve-testpython/releases.xml')
+    res.raise_for_status()
+
+    git_tag_version = (
+        subprocess.check_output("git describe --tags --exact-match", shell=True)
+        .decode("ascii")
+        .strip()
+    )
+
+    root = ET.fromstring(res.content)
+    latest_version = None
+
+    for title in root.findall('./channel/item/title'): 
+        latest_version = title.text
+        break
+    
+    current_maj, current_min, current_sub = latest_version.split('.')
+    next_maj, next_min, next_sub = git_tag_version.split('.')
+
+    if (next_maj > current_maj) or \
+        (next_maj >= current_maj and next_min > current_min) or \
+        (next_maj >= current_maj and next_min >= current_min and next_sub > current_sub):
+        subprocess.check_call("python setup.py sdist bdist_wheel --universal", shell=True)
+    else:
+        raise Exception("Invalid version: %s is not greater than latest version %s" % (git_tag_version, latest_version))
+        
+    
+
+@task
+def deploy_pip(context):
+    if 'TWINE_PASSWORD' not in os.environ:
+        raise Exception("Twine token not specified in environment")
+    subprocess.check_call("twine upload --repository testpypi -u __token__ dist/*", shell=True)