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import re
def multiple_replace(txt, adict):
    rx = re.compile('|'.join(map(re.escape, adict)))
    def one_xlat(match):
        return adict[match.group(0)]
    return rx.sub(one_xlat, txt)

txt = "Larry Wall is the creator of Perl"

adict = {
  "Larry Wall" : "Guido van Rossum",
  "creator" : "Benevolent Dictator for Life",
  "Perl" : "Python",
}

print(multiple_replace(txt, adict))
Error in lines 13-13 Traceback (most recent call last): File "/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/.sagemathcloud/sage_server.py", line 873, in execute exec compile(block+'\n', '', 'single') in namespace, locals File "", line 1, in <module> File "", line 5, in multiple_replace File "", line 4, in one_xlat IndexError: no such group 
%python
import re
def multiple_replace(txt, adict):
    rx = re.compile('|'.join(map(re.escape, adict)))
    def one_xlat(match):
        return adict[match.group(0)]
    return rx.sub(one_xlat, txt)

txt = "Larry Wall is the creator of Perl"

adict = {
  "Larry Wall" : "Guido van Rossum",
  "creator" : "Benevolent Dictator for Life",
  "Perl" : "Python",
}

print(multiple_replace(txt, adict))
Guido van Rossum is the Benevolent Dictator for Life of Python 
%python
import re
def multiple_replace(txt, adict):
    rx = re.compile('|'.join(map(re.escape, adict)))
    def one_xlat(match):
        return adict[match.group(Integer(0))]
    return rx.sub(one_xlat, txt)

txt = "Larry Wall is the creator of Perl"

adict = {
  "Larry Wall" : "Guido van Rossum",
  "creator" : "Benevolent Dictator for Life",
  "Perl" : "Python",
}

print(multiple_replace(txt, adict))
Error in lines 13-13 Traceback (most recent call last): File "/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/.sagemathcloud/sage_server.py", line 873, in execute exec compile(block+'\n', '', 'single') in namespace, locals File "", line 1, in <module> File "", line 5, in multiple_replace File "", line 4, in one_xlat IndexError: no such group 

import re
def multiple_replace(txt, adict):
    rx = re.compile('|'.join(map(re.escape, adict)))
    def one_xlat(match):
        return adict[match.group(int(0))]
    return rx.sub(one_xlat, txt)

txt = "Larry Wall is the creator of Perl"

adict = {
  "Larry Wall" : "Guido van Rossum",
  "creator" : "Benevolent Dictator for Life",
  "Perl" : "Python",
}

print(multiple_replace(txt, adict))
Guido van Rossum is the Benevolent Dictator for Life of Python 

import re
def multiple_replace(txt, adict):
    rx = re.compile('|'.join(map(re.escape, adict)))
    def one_xlat(match):
        return adict[match.group(0r)]
    return rx.sub(one_xlat, txt)

txt = "Larry Wall is the creator of Perl"

adict = {
  "Larry Wall" : "Guido van Rossum",
  "creator" : "Benevolent Dictator for Life",
  "Perl" : "Python",
}

print(multiple_replace(txt, adict))
Guido van Rossum is the Benevolent Dictator for Life of Python