X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/66c13b6055a363cb08197b8c5d040ed9a511c8ca..79aeb557d94681fb7e55321aeee2e20df1430b30:/sdk/python/arvados/config.py

diff --git a/sdk/python/arvados/config.py b/sdk/python/arvados/config.py
index ea45a48813..8f2b2654ad 100644
--- a/sdk/python/arvados/config.py
+++ b/sdk/python/arvados/config.py
@@ -7,29 +7,45 @@ import os
 import re
 
 _settings = None
-if os.environ.get('HOME') != None:
+if os.environ.get('HOME') is not None:
     default_config_file = os.environ['HOME'] + '/.config/arvados/settings.conf'
 else:
     default_config_file = ''
 
+KEEP_BLOCK_SIZE = 2**26
 EMPTY_BLOCK_LOCATOR = 'd41d8cd98f00b204e9800998ecf8427e+0'
 
 def initialize(config_file=default_config_file):
     global _settings
     _settings = {}
-    if os.path.exists(config_file):
-        with open(config_file, "r") as f:
-            for config_line in f:
-                if re.match('^\s*#', config_line):
-                    continue
-                var, val = config_line.rstrip().split('=', 2)
-                _settings[var] = val
+
+    # load the specified config file if available
+    try:
+        _settings = load(config_file)
+    except IOError:
+        pass
+
+    # override any settings with environment vars
     for var in os.environ:
         if var.startswith('ARVADOS_'):
             _settings[var] = os.environ[var]
 
-def flag_is_true(key):
-    return get(key, '').lower() in set(['1', 't', 'true', 'y', 'yes'])
+def load(config_file):
+    cfg = {}
+    with open(config_file, "r") as f:
+        for config_line in f:
+            if re.match('^\s*$', config_line):
+                continue
+            if re.match('^\s*#', config_line):
+                continue
+            var, val = config_line.rstrip().split('=', 2)
+            cfg[var] = val
+    return cfg
+
+def flag_is_true(key, d=None):
+    if d is None:
+        d = settings()
+    return d.get(key, '').lower() in set(['1', 't', 'true', 'y', 'yes'])
 
 def get(key, default_val=None):
     return settings().get(key, default_val)