187 lines
6.9 KiB
Python
187 lines
6.9 KiB
Python
import os
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import yaml
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class QuestionException(Exception):
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""" Exception to be thrown when there is something wrong with
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the question file. """
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pass
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class Questions(object):
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""" Object holding all the questions """
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QUESTION_TYPES = ["Text", "Image", "Music", "Code", "Video"]
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QUESTION_KEYS = ["Name", "Question", "Answer", "Type", "Double-Jeopardy", "Audio"]
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def __init__(self, qfile, appendPath=False, verbose=False):
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self.qfile = qfile
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self._questions = []
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self._appendPath = appendPath
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self._verbose = verbose
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self._title = "Round n"
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self._read_questions(self.qfile)
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def get_title(self):
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return self._title
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def get_sections(self):
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return [s["Section"] for s in self._questions]
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def get_questions(self, section):
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sec = filter(lambda s: s["Section"] == section, self._questions)
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if len(sec) < 1:
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raise ValueError("Section %s does not exist" % (section,))
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return sec[0]["Questions"]
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def get_question(self, section, question):
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if type(question) != int or question < 1 or question > 5:
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raise ValueError("question parameter needs to be an integer between 1 and 5")
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return self.get_questions(section)[question-1]
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def get_number_from_section(self, section):
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for i,s in enumerate(self._questions, 1):
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if s["Section"] == section:
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return i
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raise ValueError("Section '%s' does not exist" % section)
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def _get_yaml(self, filename):
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f = None
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# open file
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try:
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f = open(filename)
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except OSError as e:
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raise QuestionException("Could not read question file '%s': %s" % (filename, e))
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# load yaml
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ysrc = None
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try:
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ysrc = yaml.safe_load(f.read())
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except Exception as e:
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raise QuestionException("Error parsing YAML in question file '%s': %s" % (filename, e))
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return ysrc
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def _gen_error(self, filename, error):
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raise QuestionException("Error parsing question file '%s': %s" % (filename, error))
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def _read_questions(self, filename):
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ysrc = self._get_yaml(filename)
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if type(ysrc) == list:
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# "old style" question file, list of sections
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# just read sections and return happily ever after
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self._read_sections(ysrc, filename)
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return True
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elif type(ysrc) == dict:
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# "new style" quetion file, dict of Name and Sections
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self._read_newstyle_questions(ysrc, filename)
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return True
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else:
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self._gen_error(filename, "Contents of YAML is neither a dict nor a list (format error), see seopardy guide for question file format documentation.")
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def _read_newstyle_questions(self, ysrc, filename):
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if type(ysrc) != dict:
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self._gen_error(filename, "Error parsing question file '%s': Is not a dict (and this sould(tm) have been safeguarded by an earlier if)")
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if "Name" not in ysrc.keys():
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self._gen_error(filename, "Missing 'Name' key.")
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if "Sections" not in ysrc.keys():
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self._gen_error(filename, "Missing 'Sections' key.")
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extra_keys = filter(lambda _x: _x not in ["Name", "Sections"], ysrc.keys())
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if extra_keys:
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self._gen_error(filename, "Unsupported keys found: %s (only 'Name' and 'Sections' are supported. Is your case correct?)" % (", ".join(extra_keys),))
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if type(ysrc["Sections"]) != list:
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self._gen_error(filename, "The 'Sections' part needs to be a list of filenames, not a '%s'" % (type(ysrc["Sections"]),))
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self._title = ysrc["Name"]
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# read sections
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basedir = os.path.dirname(filename)
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for n, sec_filename in enumerate(ysrc["Sections"], 1):
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if type(sec_filename) != str:
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self._gen_error(filename, "Section element %d is not a string (type %s found)" % (n, type(sec_filename)))
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fpath = os.path.join(basedir, sec_filename)
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sec_ysrc = self._get_yaml(fpath)
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self._read_sections(sec_ysrc, fpath)
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def _read_sections(self, ysrc, filename):
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basedir = os.path.dirname(filename)
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# now to check the integrity of the question file
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if type(ysrc) is not list:
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self._gen_error(filename, "The questionfile has to be a list of sections")
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for i, sec in enumerate(ysrc, 1):
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if not "Section" in sec.keys() or not "Questions" in sec.keys():
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self._gen_error(filename, "Section %d needs to have the keys 'Section' and 'Question' (case-sensitive)" % i)
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for j, q in enumerate(sec["Questions"], 1):
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# check for keys we need in each question
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if any([x not in q.keys() for x in ["Question", "Answer", "Type"]]):
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self._gen_error(filename, "Question %d from section %d (%s) is missing one of the keywords Question, Answer or Type" % (j, i, sec["Section"]))
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# check wether the question is a string (else we'll get display errors)
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if type(q["Question"]) != str:
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self._gen_error(filename, "Question %d from section %d (%s) needs to have a string as question (put the Question in \"\")" % (j, i, sec["Section"]))
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# check for keys we do not know
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for key in q.keys():
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if key not in self.QUESTION_KEYS:
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self._gen_error(filename, "Qestion %d from section %d (%s) has invalid keyword '%s'" % (j, i, sec["Section"], key))
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# check Double-Jeopardy is a bool and is set to false if non-existant
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if "Double-Jeopardy" not in q.keys():
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q["Double-Jeopardy"] = False
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elif type(q["Double-Jeopardy"]) != bool:
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self._gen_error(filename, "The Double-Jeopardy key from question %d from section %d (%s) must be either true or false" % (j, i, sec["Section"]))
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# check Audio is a bool and is set to false if non-existant
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if "Audio" not in q.keys():
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q["Audio"] = False
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elif type(q["Audio"]) != bool:
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self._gen_error(filename, "The Audio key from question %d from section %d (%s) must be either true or false" % (j, i, sec["Section"]))
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# check for broken question types
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if q["Type"] not in self.QUESTION_TYPES:
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self._gen_error(filename, "Question %d from Section %d (%s) has an invalid type '%s' (valid types are %s)" % (j, i, sec["Section"], q["Type"], ", ".join(self.QUESTION_TYPES)))
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# check if file for music/image questions exist
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if q["Type"] in ("Music", "Image", "Video"):
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if self._appendPath:
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q["Question"] = os.path.join(basedir, q["Question"])
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if not os.path.isfile(q["Question"]):
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fname_error = ""
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if self._verbose:
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fname_error = " (path: %s)" % (q["Question"],)
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self._gen_error(filename, "File for question %d, section %d (%s) not found%s" % (j, i, sec["Section"], fname_error))
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# check if this section has enough questions
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if j != 5:
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self._gen_error(filename, "Section %d (%s) needs to have exactly %d questions (has %d)" % (i, sec["Section"], 5, j))
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# done, save yaml src to _questions
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self._questions.extend(ysrc)
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# check for only having unique section names
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sections = [s["Section"] for s in self._questions]
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if len(sections) != len(set(sections)):
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map(lambda _x: sections.remove(_x), set(sections))
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self._gen_error(filename, "All section names must be unique (clashing: %s)" % (", ".join(sections),))
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return True
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if __name__ == '__main__':
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q = Questions("questions/template.q")
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print(q.get_sections())
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print(q.get_questions("A"))
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print(q.get_question("A", 1))
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