605 lines
22 KiB
Python
605 lines
22 KiB
Python
#! python
|
|
import json
|
|
import random
|
|
from inspect import currentframe
|
|
|
|
# Import from custom utilities
|
|
from util.mockStudents import getSampleStudents
|
|
from util.generateCourses import getSampleCourses
|
|
|
|
|
|
'''
|
|
Block 1-5 is first semester while
|
|
block 6-10 is second semester
|
|
|
|
|
|
schedule example:
|
|
schedule: {
|
|
"block1": "className",
|
|
"block2": "className",
|
|
"block3": "className",
|
|
...
|
|
}
|
|
|
|
running example:
|
|
running: {
|
|
"block1": {
|
|
classCode: {
|
|
"className": name,
|
|
"students": [student Name]
|
|
},
|
|
classCode: {
|
|
"className": name,
|
|
"students": [student Name]
|
|
}
|
|
},
|
|
...
|
|
}
|
|
'''
|
|
|
|
def getLineNumber(): return currentframe().f_back.f_lineno
|
|
|
|
# Takes in information to create or add a new conflict
|
|
# Returns if the particular student has a previous error
|
|
def newConflict(pupilNum: str, email: str, conflictType: str, code: str, description: str, logs: dict) -> bool:
|
|
exists = True if pupilNum in logs else False
|
|
log = {
|
|
"Pupil #": pupilNum,
|
|
"Email": email,
|
|
"Type": conflictType,
|
|
"Code": code,
|
|
"Conflict": description
|
|
}
|
|
if exists: logs[pupilNum].append(log)
|
|
else: logs[pupilNum] = [log]
|
|
return exists
|
|
|
|
minReq, median, classCap = 18, 24, 30
|
|
activeCourses = {}
|
|
running = {
|
|
"block1": {},
|
|
"block2": {},
|
|
"block3": {},
|
|
"block4": {},
|
|
"block5": {},
|
|
"block6": {},
|
|
"block7": {},
|
|
"block8": {},
|
|
"block9": {},
|
|
"block10": {}
|
|
}
|
|
|
|
# These are the codes for Flex (spare) blocks
|
|
# Semester 1 and 2
|
|
flex = ("XAT--12A-S", "XAT--12B-S")
|
|
|
|
# V3 differs a lot by V1/2 as it does not focus on fitting the classes
|
|
# into the time table first.
|
|
# It starts by trying to get all classes full and give all students a full class list.
|
|
# Then it starts to attempt to fit all classes into a timetable, making corretions along
|
|
# the way. Corrections being moving a students class
|
|
def generateScheduleV3(
|
|
students: list,
|
|
courses: dict,
|
|
blockClassLimit: int=40,
|
|
studentsDir: str="../output/students.json",
|
|
conflictsDir: str="../output/conflicts.json"
|
|
) -> dict[str, dict]:
|
|
|
|
def equal(l: list) -> list: # Used to equalize list of numbers
|
|
q,r = divmod(sum(l),len(l))
|
|
return [q+1]*r + [q]*(len(l)-r)
|
|
|
|
|
|
# Step 1 - Calculate which classes can run
|
|
for student in students:
|
|
# Tally class request
|
|
for request in (request for request in student["requests"] if not request["alt"] and request["CrsNo"] not in flex):
|
|
code = request["CrsNo"]
|
|
courses[code]["Requests"] += 1
|
|
# Add course to active list if enough requests
|
|
if courses[code]["Requests"] > minReq and courses[code]["CrsNo"] not in activeCourses:
|
|
activeCourses[code] = courses[code]
|
|
|
|
|
|
# Step 2 - Generate empty classes
|
|
allClassRunCounts = []
|
|
courseRunInfo = {} # Generated now, used in step 4
|
|
emptyClasses = {} # List of all classes with how many students should be entered during step 3
|
|
# calculate # of times to run class
|
|
for i in range(len(activeCourses)):
|
|
index = list(activeCourses)[i]
|
|
if index not in emptyClasses: emptyClasses[index] = {}
|
|
classRunCount = activeCourses[index]["Requests"] // median
|
|
remaining = activeCourses[index]["Requests"] % median
|
|
|
|
# Put # of classRunCount classes in emptyClasses
|
|
for j in range(classRunCount):
|
|
emptyClasses[index][f"{index}-{j}"] = {
|
|
"CrsNo": index,
|
|
"Description": activeCourses[index]["Description"],
|
|
"expectedLen": median # Number of students expected in this class / may be altered
|
|
}
|
|
|
|
# If remaining fit in open slots in existing classes
|
|
if remaining <= classRunCount * (classCap - median):
|
|
# Equally disperse remaining into existing classes
|
|
while remaining > 0:
|
|
for j in range(classRunCount):
|
|
if remaining == 0: break
|
|
emptyClasses[index][f"{index}-{j}"]["expectedLen"] += 1
|
|
remaining -= 1
|
|
|
|
# If we can create a class using remaining, but no other classes
|
|
# exists, create class, and do not equalize
|
|
elif remaining >= minReq:
|
|
# Create a class using remaining
|
|
emptyClasses[index][f"{index}-{classRunCount}"] = {
|
|
"CrsNo": index,
|
|
"Description": activeCourses[index]["Description"],
|
|
"expectedLen": remaining
|
|
}
|
|
|
|
classRunCount += 1
|
|
if classRunCount >= 2:
|
|
# Equalize (level) class expectedLen's
|
|
expectedLengths = [emptyClasses[index][f"{index}-{j}"]["expectedLen"] for j in range(classRunCount)]
|
|
newExpectedLens = equal(expectedLengths)
|
|
for j in range(len(newExpectedLens)):
|
|
emptyClasses[index][f"{index}-{j}"]["expectedLen"] = newExpectedLens[j]
|
|
|
|
# Else if we can't fit remaining in open slots in existing classes
|
|
# and it is unable to create its own class,
|
|
# and requiered number to make a class is less than the max number we can provide from existing classes
|
|
elif minReq - remaining < classRunCount * (median - minReq):
|
|
# Take 1 from each class till min requirment met
|
|
for j in range(classRunCount):
|
|
emptyClasses[index][f"{index}-{j}"]["expectedLen"] -= 1
|
|
remaining += 1
|
|
if remaining == minReq: break
|
|
|
|
# Create a class using remaining
|
|
emptyClasses[index][f"{index}-{classRunCount}"] = {
|
|
"CrsNo": index,
|
|
"Description": activeCourses[index]["Description"],
|
|
"expectedLen": remaining
|
|
}
|
|
|
|
classRunCount += 1
|
|
|
|
# Equalize (level) class expectedLen's
|
|
expectedLengths = [emptyClasses[index][f"{index}-{j}"]["expectedLen"] for j in range(classRunCount)]
|
|
newExpectedLens = equal(expectedLengths)
|
|
for j in range(len(newExpectedLens)):
|
|
emptyClasses[index][f"{index}-{j}"]["expectedLen"] = newExpectedLens[j]
|
|
|
|
else:
|
|
# In the case that the remaining requests are unable to be resolved
|
|
# Fill as many requests into class as possible, any left that can't fit,
|
|
# Will need to be ignored so later we can fold them into their alternative
|
|
# choices
|
|
for j in range(classRunCount):
|
|
if emptyClasses[index][f"{index}-{j}"]["expectedLen"] < classCap and remaining > 0:
|
|
emptyClasses[index][f"{index}-{j}"]["expectedLen"] += 1
|
|
remaining -= 1
|
|
|
|
courseRunInfo[index] = {
|
|
"Total": classRunCount,
|
|
"CrsNo": index
|
|
}
|
|
allClassRunCounts.append(classRunCount)
|
|
|
|
|
|
# Step 3 Fill emptyClasses with Students
|
|
selectedCourses = {}
|
|
tempStudents = list(students)
|
|
|
|
while len(tempStudents) > 0:
|
|
student = tempStudents[random.randint(0, len(tempStudents)-1)]
|
|
|
|
alternates = [request for request in student["requests"] if request["alt"]]
|
|
for request in (request for request in student["requests"] if not request["alt"] and request["CrsNo"] not in flex):
|
|
course = request["CrsNo"]
|
|
getAvailableCourse = True
|
|
isAlt = False
|
|
while getAvailableCourse:
|
|
if course in emptyClasses:
|
|
# if course exists, get first available class
|
|
for cname in emptyClasses[course]:
|
|
if cname in selectedCourses:
|
|
if isAlt and emptyClasses[course][cname]["expectedLen"] < classCap:
|
|
emptyClasses[course][cname]["expectedLen"] += 1
|
|
if len(selectedCourses[cname]["students"]) < emptyClasses[course][cname]["expectedLen"]:
|
|
# Class exists with room for student
|
|
selectedCourses[cname]["students"].append({
|
|
"Pupil #": student["Pupil #"],
|
|
"index": student["studentIndex"]
|
|
})
|
|
getAvailableCourse = False
|
|
break
|
|
elif len(selectedCourses[cname]["students"]) == emptyClasses[course][cname]["expectedLen"]:
|
|
# If class is full, and is last class of that course
|
|
if cname[len(cname)-1] == f"{len(emptyClasses[course])-1}":
|
|
if len(alternates) > 0:
|
|
# Use alternate
|
|
course = alternates[0]["CrsNo"]
|
|
alternates.remove(alternates[0])
|
|
isAlt = True
|
|
break
|
|
else:
|
|
# Force break loop, ignore and let an admin
|
|
# handle options to solve for missing class
|
|
getAvailableCourse = False
|
|
break
|
|
elif cname not in selectedCourses:
|
|
selectedCourses[cname] = {
|
|
"students": [{
|
|
"Pupil #": student["Pupil #"],
|
|
"index": student["studentIndex"]
|
|
}],
|
|
"CrsNo": course,
|
|
"Description": courses[course]["Description"]
|
|
}
|
|
getAvailableCourse = False
|
|
break
|
|
|
|
elif course not in emptyClasses:
|
|
if len(alternates) > 0:
|
|
# Use alternate
|
|
course = alternates[0]["CrsNo"]
|
|
alternates.remove(alternates[0])
|
|
isAlt = True
|
|
else:
|
|
# Force break loop, ignore and let an admin
|
|
# handle options to solve for missing class
|
|
getAvailableCourse = False
|
|
|
|
students[student["studentIndex"]]["remainingAlts"] = alternates
|
|
tempStudents.remove(student)
|
|
|
|
|
|
# Step 4 - Attempt to fit classes into timetable
|
|
def stepIndex(offset: int, stepType: int) -> int:
|
|
# stepType 0 is for stepping between first and second semester
|
|
if stepType == 0: return 5 if offset == 0 or offset == -4 else -4
|
|
|
|
# stepType 1 is for stepping between second and first semester
|
|
elif stepType == 1: return -5 if offset == 0 or offset == 6 else 6
|
|
|
|
# Return Error if code is altered to cause error
|
|
else: raise SystemExit(f"Invalid 'stepType' in func 'stepIndex' line {getLineNumber()}")
|
|
|
|
while len(allClassRunCounts) > 0:
|
|
# Get highest resource class (most times run)
|
|
index = allClassRunCounts.index(min(allClassRunCounts))
|
|
course = list(courseRunInfo)[index]
|
|
|
|
# Tally first and second semester
|
|
sem1, sem2 = 0, 0
|
|
sem1List, sem2List = {}, {}
|
|
for i in range(1, 11):
|
|
if i <= 5:
|
|
sem1 += len(running[f"block{i}"])
|
|
sem1List[f"block{i}"] = running[f"block{i}"]
|
|
elif i > 5:
|
|
sem2 += len(running[f"block{i}"])
|
|
sem2List[f"block{i}"] = running[f"block{i}"]
|
|
|
|
# If there is more than one class Running
|
|
if allClassRunCounts[index] > 1:
|
|
blockIndex = 0 if sem1 <= sem2 else 5
|
|
stepType = 0 if sem1 <= sem2 else 1
|
|
offset = 0
|
|
|
|
# Spread classes throughout both semesters
|
|
for i in range(courseRunInfo[course]["Total"]):
|
|
cname = f"{course}-{i}"
|
|
classInserted = False
|
|
while not classInserted:
|
|
|
|
blockIndex += offset
|
|
if len(running[list(running)[blockIndex]]) < blockClassLimit:
|
|
running[list(running)[blockIndex]][cname] = {
|
|
"CrsNo": course,
|
|
"Description": emptyClasses[course][cname]["Description"],
|
|
"students": selectedCourses[cname]["students"]
|
|
}
|
|
allClassRunCounts[index] -= 1
|
|
classInserted = True
|
|
|
|
offset = stepIndex(offset, stepType)
|
|
|
|
if blockIndex >= 9:
|
|
blockIndex = 0 if sem1 <= sem2 else 5
|
|
offset = 0
|
|
|
|
# If the class only runs once, place in semester with least classes
|
|
elif allClassRunCounts[index] == 1:
|
|
# Equally disperse into semesters classes
|
|
semBlocks = []
|
|
offset = 1
|
|
|
|
if sem1 <= sem2:
|
|
for block in sem1List:
|
|
semBlocks.append(len(block))
|
|
|
|
# If sem1 is less than or equal to sem2, add to sem1
|
|
if sem1 <= sem2: [semBlocks.append(len(block)) for block in sem1List]
|
|
|
|
# If sem2 is less than sem1, add to sem2
|
|
elif sem1 > sem2: [semBlocks.append(len(block)) for block in sem2List]
|
|
|
|
# Get block with least classes
|
|
leastBlock = semBlocks.index(min(semBlocks))
|
|
cname = f"{course}-0"
|
|
|
|
running[f"block{leastBlock+offset}"][course] = {
|
|
"CrsNo": course,
|
|
"Description": emptyClasses[course][cname]["Description"],
|
|
"students": selectedCourses[cname]["students"],
|
|
}
|
|
|
|
allClassRunCounts[index] -= 1
|
|
|
|
# Remove course when fully inserted
|
|
if allClassRunCounts[index] == 0:
|
|
allClassRunCounts.remove(allClassRunCounts[index])
|
|
courseRunInfo.pop(list(courseRunInfo)[index])
|
|
|
|
|
|
# Step 5 - Fill student schedule
|
|
for block in running:
|
|
for cname in running[block]:
|
|
for student in running[block][cname]["students"]:
|
|
students[student["index"]]["schedule"][block].append(cname)
|
|
students[student["index"]]["classes"] += 1
|
|
|
|
|
|
# Step 6 - Evaluate, move students to fix conflicts
|
|
conflictLogs = {}
|
|
criticalCount, acceptableCount = 0, 0
|
|
c_mc_count, c_cr_count, a_mc_count = 0, 0, 0
|
|
studentsCritical, studentsAcceptable = 0, 0
|
|
|
|
for student in students:
|
|
initialBlocks = [student["schedule"][block] for block in student["schedule"]]
|
|
conflicts = sum(1 for b in initialBlocks if len(b)>1)
|
|
hasConflicts = True if conflicts > 0 else False
|
|
|
|
# If there is no conflicts
|
|
# and classes inserted to is equal to expectedClasses
|
|
# or classes the student is inserted to is missing
|
|
# no more than two classes:
|
|
# continue to next student
|
|
if not hasConflicts and student["classes"] == student["expectedClasses"]: continue
|
|
elif not hasConflicts and (student["expectedClasses"]-2) <= student["classes"] < student["expectedClasses"]:
|
|
a_mc_count += 1
|
|
acceptableCount += 1
|
|
if not newConflict(student["Pupil #"], "", "Acceptable", "A-MC", "Missing 1-2 Classses", conflictLogs): studentsAcceptable += 1
|
|
continue
|
|
|
|
studentData = {
|
|
"Pupil #": student["Pupil #"],
|
|
"index": student["studentIndex"]
|
|
}
|
|
|
|
# If we are unable to solve, we add to exceptions
|
|
# and keep trying to resolve the rest of the schedule
|
|
exceptions = []
|
|
|
|
while hasConflicts:
|
|
# Check if conflicts have been resolved
|
|
blocks = [student["schedule"][block] for block in student["schedule"]]
|
|
# If there is exceptions, make them look normal in blocks
|
|
# list to ignore them when looking for clashes, and not to
|
|
# accidently overwrite while evaluating other classes
|
|
if len(exceptions) > 0:
|
|
for i in range(len(blocks)):
|
|
if i in exceptions: blocks[i] = ['EXPT']
|
|
conflicts = sum(1 for b in blocks if len(b)>1)
|
|
|
|
if conflicts == 0: break
|
|
|
|
elif conflicts > 0:
|
|
|
|
blockLens = [len(block) for block in blocks]
|
|
freeBlocks = [index for index in range(len(blocks)) if len(blocks[index]) == 0]
|
|
|
|
clashIndex = blockLens.index(max(blockLens))
|
|
blockOut = f"block{clashIndex+1}"
|
|
classIndex = 0
|
|
done, advancedConflict = False, False
|
|
|
|
while not done:
|
|
classOut = blocks[clashIndex][classIndex]
|
|
found = False
|
|
for index in freeBlocks:
|
|
if found: break
|
|
if index != clashIndex:
|
|
blockIn = list(running)[index]
|
|
for cname in running[blockIn]:
|
|
if cname[:-2] == classOut[:-2] and len(running[blockIn][cname]["students"]) < classCap:
|
|
|
|
# Update records
|
|
student["schedule"][blockOut].remove(classOut)
|
|
student["schedule"][blockIn].append(cname)
|
|
|
|
running[blockOut][classOut]["students"].remove(studentData)
|
|
running[blockIn][cname]["students"].append(studentData)
|
|
|
|
found = True
|
|
break
|
|
|
|
if not found:
|
|
if classIndex < len(blocks[clashIndex])-1: classIndex += 1
|
|
elif classIndex == len(blocks[clashIndex])-1:
|
|
classIndex = 0
|
|
advancedConflict = True
|
|
done = True
|
|
else:
|
|
print(f"Fatal error ({getLineNumber()}): Impossible error")
|
|
continue
|
|
|
|
elif found: done = True
|
|
|
|
if advancedConflict:
|
|
attemptResolve = True
|
|
classOutIndex = 0
|
|
while attemptResolve:
|
|
foundSolution = False
|
|
newClassOut = blocks[clashIndex][classOutIndex]
|
|
for blockIndex in range(len(running)):
|
|
if foundSolution: break
|
|
if blockIndex != clashIndex and blockIndex not in exceptions:
|
|
for cname in running[list(running)[blockIndex]]:
|
|
if cname[:-2] == newClassOut[:-2]:
|
|
blockIn = f"block{blockIndex+1}"
|
|
if blockIndex in freeBlocks:
|
|
if len(running[blockIn][cname]["students"]) < classCap:
|
|
# In the rare or impossible case a student was not inserted to a class
|
|
# And it weren't full, insert them into the class
|
|
student["schedule"][blockOut].remove(newClassOut)
|
|
student["schedule"][blockIn].append(cname)
|
|
|
|
running[blockOut][newClassOut]["students"].remove(studentData)
|
|
running[blockIn][cname]["students"].append(studentData)
|
|
foundSolution = True
|
|
break
|
|
|
|
elif len(blocks[blockIndex]) == 1:
|
|
oClassOut = blocks[blockIndex][0]
|
|
found_oBlockSolution = False
|
|
for oBlockIndex in range(len(running)):
|
|
if found_oBlockSolution: break
|
|
if oBlockIndex != clashIndex and oBlockIndex not in exceptions and oBlockIndex in freeBlocks:
|
|
for ocname in running[list(running)[oBlockIndex]]:
|
|
if ocname[:-2] == oClassOut[:-2]:
|
|
oBlockIn = f"block{oBlockIndex+1}"
|
|
if len(running[oBlockIn][ocname]["students"]) < classCap:
|
|
student["schedule"][blockOut].remove(newClassOut)
|
|
student["schedule"][blockIn].append(cname)
|
|
student["schedule"][blockIn].remove(oClassOut)
|
|
student["schedule"][oBlockIn].append(ocname)
|
|
|
|
running[blockOut][newClassOut]["students"].remove(studentData)
|
|
running[blockIn][cname]["students"].append(studentData)
|
|
running[blockIn][oClassOut]["students"].remove(studentData)
|
|
running[oBlockIn][ocname]["students"].append(studentData)
|
|
|
|
found_oBlockSolution = True
|
|
break
|
|
|
|
|
|
if not found_oBlockSolution:
|
|
exceptions.append(clashIndex)
|
|
criticalCount += 1
|
|
c_cr_count += 1
|
|
if not newConflict(student["Pupil #"], "", "Critial", "C-CR", "Couldn't Resolve", conflictLogs): studentsCritical += 1
|
|
|
|
foundSolution = True
|
|
break
|
|
|
|
if not foundSolution:
|
|
if classOutIndex < len(blocks[clashIndex]) - 1: classOutIndex += 1
|
|
elif classOutIndex == len(blocks[clashIndex]) - 1:
|
|
if len(student["remainingAlts"]) > 0:
|
|
exceptions.append(clashIndex)
|
|
criticalCount += 1
|
|
c_cr_count += 1
|
|
if not newConflict(student["Pupil #"], "", "Critical", "C-CR", "Couldn't Resolve", conflictLogs): studentsCritical += 1
|
|
|
|
attemptResolve = False
|
|
# Attempt to use alt
|
|
elif len(student["remainingAlts"]) == 0:
|
|
exceptions.append(clashIndex)
|
|
criticalCount += 1
|
|
c_cr_count += 1
|
|
if not newConflict(student["Pupil #"], "", "Critical", "C-CR", "Couldn't Resolve", conflictLogs): studentsCritical += 1
|
|
|
|
attemptResolve = False
|
|
else: print("Impossible - Thanos")
|
|
elif foundSolution:
|
|
attemptResolve = False
|
|
|
|
else:
|
|
print(f"Fatal error ({getLineNumber()}): Impossible error")
|
|
continue
|
|
|
|
metSelfRequirements = True if student["classes"] == student["expectedClasses"] else False
|
|
while not metSelfRequirements:
|
|
|
|
if (student["expectedClasses"] - 2) <= student["classes"] < student["expectedClasses"]:
|
|
a_mc_count += 1
|
|
acceptableCount += 1
|
|
if not newConflict(student["Pupil #"], "", "Acceptable", "A-MC", "Missing 1-2 Classses", conflictLogs): studentsAcceptable += 1
|
|
break
|
|
|
|
elif student["classes"] < (student["expectedClasses"] - 2):
|
|
# Difference between classes inserted to and
|
|
# expected classes is too great, attempt to fix
|
|
if student["Pupil #"] in conflictLogs:
|
|
c_mc_count += 1
|
|
criticalCount += 1
|
|
if not newConflict(student["Pupil #"], "", "Critical", "C-MC", "Missing too many Classses", conflictLogs): studentsCritical += 1
|
|
|
|
break
|
|
|
|
else:
|
|
print(f"Fatal error ({getLineNumber()}): Impossible error")
|
|
continue
|
|
|
|
finalConflictLogs = {
|
|
"Conflicts": conflictLogs,
|
|
"Critical": {
|
|
"Total": criticalCount,
|
|
"Students": studentsCritical,
|
|
"Errors": [{
|
|
"Total": c_mc_count,
|
|
"Description": "Missing too many Classes",
|
|
"Code": "C-MC"
|
|
}, {
|
|
"Total": c_cr_count,
|
|
"Description": "Couldn't Resolve",
|
|
"Code": "C-CR"
|
|
}]
|
|
},
|
|
"Acceptable": {
|
|
"Total": acceptableCount,
|
|
"Students": studentsAcceptable,
|
|
"Errors": [{
|
|
"Total": a_mc_count,
|
|
"Description": "Missing 1-2 Classes",
|
|
"Code": "A-MC"
|
|
}]
|
|
}
|
|
}
|
|
|
|
# Log Conflict to records
|
|
with open(conflictsDir, "w") as outfile:
|
|
json.dump(finalConflictLogs, outfile, indent=2)
|
|
|
|
for student in students:
|
|
for block in student["schedule"]:
|
|
if len(student["schedule"][block]) == 0:
|
|
if int(block[len(block)-1]) <= 5: student["schedule"][block].append(flex[0])
|
|
elif int(block[len(block)-1]) > 5: student["schedule"][block].append(flex[1])
|
|
|
|
# Update Student records
|
|
with open(studentsDir, "w") as outfile:
|
|
json.dump(students, outfile, indent=2)
|
|
|
|
return running
|
|
|
|
if __name__ == '__main__':
|
|
print("Processing...")
|
|
|
|
sampleStudents = getSampleStudents(True)
|
|
samplemockCourses = getSampleCourses(True)
|
|
timetable = {}
|
|
timetable["Version"] = 3
|
|
timetable["timetable"] = generateScheduleV3(sampleStudents, samplemockCourses)
|
|
|
|
with open("../output/timetable.json", "w") as outfile:
|
|
json.dump(timetable, outfile, indent=2)
|
|
|
|
print("Done") |