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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def findLeftBrace(self, block, column):
 """Search for a corresponding '{' and return its indentation If not found return None """

        block, column = self.findBracketBackward(block, column, '{')  # raise ValueError if not found

        try:
            block, column = self.tryParenthesisBeforeBrace(block, column)
        except ValueError:
            pass # leave previous values
        return self._blockIndent(block)