Changeset 1927 for tools

Timestamp:

Oct 14, 2005, 4:14:19 PM (20 years ago)

Author:

ole

Message:

Improved expression parser for apply_expression_to_dictionary()

File:

• tools/pytools/misc.py (modified) (2 diffs)

tools/pytools/misc.py

@@ -1 +1 @@
       
+def multiple_replace(dictionary, text):
+    """Multiple replace
+
+    Python Cookbook 3.14 page 88 and page 90
+    """
+
+    import re
+    
+    #Create a regular expression from all of the dictionary keys
+    #matching only entire words
+    #regex = re.compile("|".join(map(re.escape, dictionary.keys())))
+    regex = re.compile(r'\b'+ \
+                       r'\b|\b'.join(map(re.escape, dictionary.keys()))+ \
+                       r'\b' )
+
+    #For each match, lookup the corresponding value in the dictionary
+    return regex.sub(lambda match: dictionary[match.group(0)], text)
+
+
 def merge_dictionaries(D1,D2):
     """merge_dictionaries(D1,D2)
@@ -19 +38 @@
     return D1
 
+
+