class Integrals(object):
"""
contains available integration methods
"""
def __init__(self):
"""
creates variables used for reading, parsing and calculating
:return: none
"""
self.reader = InputReader() # reading engine
self.validator = InputValidator() # parsing engine
self.integrator = TrIntegrator() # integration engine
def singleIntegral(self):
"""
calculates single integral provided from console input
:return: list, history of completed calculations
"""
log = [] # create empty log list
while True:
parameters = self.reader.consoleInput() # get data
if len(parameters) > 0: # if there is anything to do
polynomial = eval("lambda x : " + parameters[0]) # create function of provided equation
result = self.integrator.integrate(polynomial, float(parameters[1]), float(parameters[2]), float(parameters[3]) ) # run integration
print("Result: " + str(result))
log.append(str(datetime.now()) + ", Result: " + str(result) + ", W(x)=" + parameters[0] + ', from:' + parameters[1] + ' to:' + parameters[2] + ', step=' + parameters[3]) # add result to log
if len(parameters) > 0 and self.reader.yesNoInput("Would you like to begin new integration?"): # ask user to try again
continue
else:
return log
def manyIntegrals(self):
"""
calculates seres of integrals provided in file
:return: list, history of completed calculations
"""
log = []
while True:
fileContent = self.reader.fileInput() # ask user for input
for line in fileContent: # for each line in file get the parameters
parameters = line[5:]
parameters = parameters.split(' ')
parameters[0] = parameters[0].split(',')[0]
parameters[1] = parameters[1].split(':')[1]
parameters[2] = parameters[2].split(':')[1]
parameters[2] = parameters[2].split(',')[0]
parameters[3] = parameters[3].split('=')[1]
if self.validator.validateParameters(parameters): # parse the parameters
polynomial = eval("lambda x : " + parameters[0]) # create function from equation
result = self.integrator.integrate(polynomial, float(parameters[1]), float(parameters[2]), float(parameters[3]) ) # do th integration
print("Result: " + str(result))
log.append(str(datetime.now()) + ", Result: " + str(result) + ", W(x)=" + parameters[0] + ', from:' + parameters[1] + ' to:' + parameters[2] + ', step=' + parameters[3]) # save to log
else:
print("Error in line: " + "'" + line + "'")
if len(fileContent) > 0 and self.reader.yesNoInput("Would you like to begin new integration?"): # ask user to try again
continue
else:
return log
menu = Menu()
reader = InputReader()
sub = Integrals()
myHelp = Help()
while True:
selection = menu.select() #
if selection == 'q': # Quiting the main menu
break
elif selection == '1': # choosing single integral option
result = sub.singleIntegral()
log.add(result)
elif selection == '2': # choosing many integrals
results = sub.manyIntegrals()
log.add(results)
elif selection == '3': # choosing history
log.show()
raw_input("Press any key to close...")
elif selection == '4': # choosing help
myHelp.show()
raw_input("Press any key to close...")
if not(log.isEmpty()): # displays this session's history only if there is something to show
log.show()
if reader.yesNoInput("Save history to file?"):
log.saveToFile()
print("Goodbye!")
