CODEWITHSUNDEEP
pythoncasepython-re
BaRud
BaRud

Reputation: 3218

can not change case in python

in the code below, I want to change the case of End, depending on the case of openningline. But, it is not working, i.e. nomatter the case of openningline, End is always End, not end or END.

What I am doing wrong here?

class SyntaxElement:
    def __init__(self, openningline, closingline):
        self.openningline = openningline
        self.closingline = closingline
    def match(self, line): 
        """ Return (indent, closingline) or (None, None)"""
        match = self.openningline.search(line)
        if match:
            indentpattern = re.compile(r'^\s*')
            variablepattern = re.compile(r'\$\{(?P<varname>[a-zA-Z0-9_]*)\}')
            indent = indentpattern.search(line).group(0)
            if self.openningline.pattern.istitle():
              closingline = self.closingline.title()
            elif self.openningline.pattern.islower():
              closingline = self.closingline.lower()
            elif self.openningline.pattern.isupper():
              closingline = self.closingline.upper()
            else:
              closingline = self.closingline

            
            # expand variables in closingline
            while True:
                variable_match = variablepattern.search(closingline)
                if variable_match:
                    try:
                        replacement = match.group(variable_match.group('varname'))
                    except:
                        print("Group %s is not defined in pattern" % variable_match.group('varname'))
                        replacement = variable_match.group('varname')
                    try:
                        closingline = closingline.replace(variable_match.group(0), replacement)
                    except TypeError:
                        if replacement is None:
                            replacement = ""
                        closingline = closingline.replace(variable_match.group(0), str(replacement))
                else:
                    break
        else:
            return (None, None)
        closingline = closingline.rstrip()
        return (indent, closingline)
            
        
def fortran_complete():

    syntax_elements = [
        SyntaxElement(re.compile(r'^\s*\s*((?P<struc>([A-z0-9]*)))\s*((?P<name>([a-zA-Z0-9_]+)))', re.IGNORECASE),
                      'End ${struc} ${name}' ),
    ]

Upvotes: 1

Views: 74

Answers (2)

Barmar
Barmar

Reputation: 780974

You're not using the regular expression to match anything. It should be:

matched = self.openningline.search(line).group(0)
if matched.istitle():
    closingline = closingline.title()
elif matched.isupper():
    closingline = closingline.upper()
elif matched.islower():
    closingline = closingline.lower()

Upvotes: 2

Javier Vargas
Javier Vargas

Reputation: 94

It seems you expect openningline to be a re. So, when you use self.openningline.pattern.istitle() you are testing the regular expression pattern not the line you are trying to match with the re. Most of the time the regular expressions patterns will be False for istitle(), islower() and isupper().

I am not exactly able to understand what you are trying to do but maybe you should use line.istitle() and so on.

Upvotes: 1

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