import collections import itertools from os import replace import re import json def solveLogic(logic, symbol, logicFunc): regComp = re.compile("(?P<expression>(?P<oper1>[a,p])(?P<op>\{})(?P<oper2>[a,p]))".format(symbol)) while True: res = regComp.search(logic) if not res: break resAr = res.groups() oper1 = resAr[1] == "p" oper2 = resAr[3] == "p" endRes = logicFunc(oper1, oper2) charRes = "p" if endRes else "a" logic = logic.replace(resAr[0], charRes) return logic def getTruth(logic): logic = logic.strip() braceCoors = [] currStart = -1 braceCount = 0 for i in range(0, len(logic)): character = logic[i] if character=="(": if braceCount==0: currStart = i braceCount+=1 if character==")": braceCount-=1 if braceCount==0: braceCoors.append( { "withBraces" : logic[currStart:i+1], "withoutBraces" : logic[(currStart+1):i] }) for coor in braceCoors: logic = logic.replace(coor["withBraces"], getTruth(coor["withoutBraces"])) logic = logic.replace("-", "") logic = logic.replace("!a", "p") logic = logic.replace("!p", "a") logic = solveLogic(logic, "&", lambda oper1, oper2 : oper1 and oper2) logic = solveLogic(logic, "|", lambda oper1, oper2 : oper1 or oper2) logic = solveLogic(logic, "^", lambda oper1, oper2 : oper1 ^ oper2) logic = solveLogic(logic, ">", lambda oper1, oper2 : not oper1 or oper2) logic = solveLogic(logic, "=", lambda oper1, oper2 : oper1 == oper2) return logic def getInputs(varCount): inputs = [] for combination in itertools.product(['a', 'p'], repeat=varCount): combStr = ''.join(combination) inputs.append((input(combStr + ": "), combination)) # piem. app: return inputs def getGenericVars(count): vars = [] for i in range(count): vars.append(chr(ord('A')+i)) return vars def getCon(vals, varList): if all(val[0] == 'a' for val in vals): return 'a' resSets = [] for val in vals: if val[0] == 'p': currResSet = [] for i in range(len(val[1])): toAppend = varList[i] if val[1][i] == 'a': toAppend = '!' + toAppend currResSet.append(toAppend) resSets.append('('+'&'.join(currResSet) + ')') return '|'.join(resSets) def getDis(vals, varList): if all(val[0] == 'p' for val in vals): return 'p' resSets = [] for val in vals: if val[0] == 'a': currResSet = [] for i in range(len(val[1])): toAppend = varList[i] if val[1][i] == 'p': toAppend = '!' + toAppend currResSet.append(toAppend) resSets.append('(' + '|'.join(currResSet) + ')') return '&'.join(resSets) def getVariations(expression): vars = dict() variations = [] pattern = re.compile("!|&|-|>|\(|\)|\||=| |a|p|\^") for char in expression: if not pattern.match(char): vars[char] = char variations = itertools.product(['a', 'p'], repeat = len(vars)) return { "vars" : list(vars.values()), "variations" : variations } def findConFromExpr(expr): variations = getVariations(expr) valueTable = [] for variation in variations["variations"]: logic = expr for i in range(len(variations["vars"])): var = variations["vars"][i] logic = logic.replace(var, variation[i]) valueTable.append((getTruth(logic), variation)) return getCon(valueTable, variations["vars"]) def findDisFromExpr(expr): variations = getVariations(expr) valueTable = [] for variation in variations["variations"]: logic = expr for i in range(len(variations["vars"])): var = variations["vars"][i] logic = logic.replace(var, variation[i]) valueTable.append((getTruth(logic), variation)) return getDis(valueTable, variations["vars"]) while True: operationType = input("IzvÄ“laties atrisinÄt loÄ£isko izteiksmi(1) vai iegÅ«t normÄlformu no tabulas rezultÄtiem(2), izteiksmes(3): ") if operationType == "1": logicIn = input("Ierakstiet loÄ£isko izteiksmi ar a un p vertÄ«bÄm (piem. !a&p->a->(p|(a=a)^p)): ") print(getTruth(logicIn)) elif operationType == "2": type = input("KonjuktÄ«vais(k) vai disjunktÄ«vais(d): ") count = int(input("Ievadiet mainÄ«go skaitu: ")) inputs = getInputs(count) if type == 'k': print(getCon(inputs, getGenericVars(count))) elif type == 'd': print(getDis(inputs, getGenericVars(count))) elif operationType == "3": type = input("KonjuktÄ«vais(k) vai disjunktÄ«vais(d): ") logicIn = input("Ierakstiet loÄ£isko izteiksmi ar mainÄ«go vertÄ«bÄm (piem. !A&B->C->(Q|(A=a)^M)): ") if type == 'k': print(findConFromExpr(logicIn)) elif type == 'd': print(findDisFromExpr(logicIn))
Write, Run & Share Python code online using OneCompiler's Python online compiler for free. It's one of the robust, feature-rich online compilers for python language, supporting both the versions which are Python 3 and Python 2.7. Getting started with the OneCompiler's Python editor is easy and fast. The editor shows sample boilerplate code when you choose language as Python or Python2 and start coding.
OneCompiler's python online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample python program which takes name as input and print your name with hello.
import sys
name = sys.stdin.readline()
print("Hello "+ name)
Python is a very popular general-purpose programming language which was created by Guido van Rossum, and released in 1991. It is very popular for web development and you can build almost anything like mobile apps, web apps, tools, data analytics, machine learning etc. It is designed to be simple and easy like english language. It's is highly productive and efficient making it a very popular language.
When ever you want to perform a set of operations based on a condition IF-ELSE is used.
if conditional-expression
#code
elif conditional-expression
#code
else:
#code
Indentation is very important in Python, make sure the indentation is followed correctly
For loop is used to iterate over arrays(list, tuple, set, dictionary) or strings.
mylist=("Iphone","Pixel","Samsung")
for i in mylist:
print(i)
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while condition
#code
There are four types of collections in Python.
List is a collection which is ordered and can be changed. Lists are specified in square brackets.
mylist=["iPhone","Pixel","Samsung"]
print(mylist)
Tuple is a collection which is ordered and can not be changed. Tuples are specified in round brackets.
myTuple=("iPhone","Pixel","Samsung")
print(myTuple)
Below throws an error if you assign another value to tuple again.
myTuple=("iPhone","Pixel","Samsung")
print(myTuple)
myTuple[1]="onePlus"
print(myTuple)
Set is a collection which is unordered and unindexed. Sets are specified in curly brackets.
myset = {"iPhone","Pixel","Samsung"}
print(myset)
Dictionary is a collection of key value pairs which is unordered, can be changed, and indexed. They are written in curly brackets with key - value pairs.
mydict = {
"brand" :"iPhone",
"model": "iPhone 11"
}
print(mydict)
Following are the libraries supported by OneCompiler's Python compiler
Name | Description |
---|---|
NumPy | NumPy python library helps users to work on arrays with ease |
SciPy | SciPy is a scientific computation library which depends on NumPy for convenient and fast N-dimensional array manipulation |
SKLearn/Scikit-learn | Scikit-learn or Scikit-learn is the most useful library for machine learning in Python |
Pandas | Pandas is the most efficient Python library for data manipulation and analysis |
DOcplex | DOcplex is IBM Decision Optimization CPLEX Modeling for Python, is a library composed of Mathematical Programming Modeling and Constraint Programming Modeling |