r11192 - /branches/bieri_gui/gui_bieri/components/conversion.py -- May 19, 2010 - 01:52

Author: michaelbieri
Date: Wed May 19 01:52:06 2010
New Revision: 11192

URL: http://svn.gna.org/viewcvs/relax?rev=11192&view=rev
Log:
Function to convert a float written in a string to a proper float object is 
added.

Modified:
    branches/bieri_gui/gui_bieri/components/conversion.py

Modified: branches/bieri_gui/gui_bieri/components/conversion.py
URL: 
http://svn.gna.org/viewcvs/relax/branches/bieri_gui/gui_bieri/components/conversion.py?rev=11192&r1=11191&r2=11192&view=diff
==============================================================================
--- branches/bieri_gui/gui_bieri/components/conversion.py (original)
+++ branches/bieri_gui/gui_bieri/components/conversion.py Wed May 19 01:52:06 
2010
@@ -1,0 +1,54 @@
+###############################################################################
+#                                                                            
 #
+# Copyright (C) 2010 Michael Bieri                                           
 #
+#                                                                            
 #
+# This file is part of the program relax.                                    
 #
+#                                                                            
 #
+# relax is free software; you can redistribute it and/or modify              
 #
+# it under the terms of the GNU General Public License as published by       
 #
+# the Free Software Foundation; either version 2 of the License, or          
 #
+# (at your option) any later version.                                        
 #
+#                                                                            
 #
+# relax is distributed in the hope that it will be useful,                   
 #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of             
 #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              
 #
+# GNU General Public License for more details.                               
 #
+#                                                                            
 #
+# You should have received a copy of the GNU General Public License          
 #
+# along with relax; if not, write to the Free Software                       
 #
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  
 #
+#                                                                            
 #
+###############################################################################
+
+# Package docstring.
+"""Package for the different conversion tools used to bring together the GUI 
and API of relax."""
+
+from string import replace, strip, split
+
+
+def str_to_float(string):
+    """Function to convert a float in a string object to a real float object.
+
+    such as:    "3.5 * 1e6" to 3.5*1e6
+
+
+    @keyword string     Float in string that will be converted to float 
object.
+    @type string        str
+    """
+
+    # Delete whitespace.
+    string = replace(string, ' ','')
+
+    # Strip string.
+    values = split(string, '*')
+
+    # Detect exponent.
+    if '1e' in values[1]:
+        exponent = float(replace(values[1], '1e', ''))
+    if '10^' in values[1]:
+        exponent = float(replace(values[1], '10^', ''))
+
+    # Calculate float.
+    float_obj = float(values[0]) * 10**exponent
+
+    return float_obj