added some function to bashrc. fixed issue 2.

pythonbrew/curl.py

@@ -0,0 +1,36 @@
+import sys
+import subprocess
+from subprocess import Popen, PIPE
+from pythonbrew.log import logger
+
+class Curl(object):
+    def __init__(self):
+        returncode = subprocess.call("command -v curl > /dev/null", shell=True)
+        if returncode:
+            logger.info("pythonbrew required curl. curl was not found in your path.")
+            sys.exit(1)
+    
+    def read(self, url):
+        p = Popen("curl -skL %s" % url, stdout=PIPE, shell=True)
+        p.wait()
+        if p.returncode:
+            raise
+        return p.stdout.read()
+    
+    def readheader(self, url):
+        p = Popen("curl --head -skL %s" % url, stdout=PIPE, shell=True)
+        p.wait()
+        if p.returncode:
+            raise
+        respinfo = {}
+        for line in p.stdout:
+            line = line.strip().split(":", 1)
+            if len(line) == 2:
+                respinfo[line[0].strip().lower()] = line[1].strip()
+        return respinfo
+    
+    def fetch(self, url, filename):
+        p = Popen("curl -# -kL %s -o %s" % (url, filename), shell=True)
+        p.wait()
+        if p.returncode:
+            raise