# Read a poly until it works. An EOF will except out of the
# program.
while 1:
try:
poly = polynomial.read('Enter a polynomial coefficients: ')
except EOFError:
raise
except:
print('Conversion failed. Please try again.')
else:
break
# Read and evaluate x values until the user types a blank line.
# Again, and EOF will except out of the pgm.
while 1:
resp = input('Enter x value or blank line: ')
if resp == 'quit': raise EOFError
if not resp: break
try:
x = int(resp)
except ValueError:
print("That doesn't look like an integer. Please try again.")
else:
print('p(x) =', polynomial.srep(poly))
print('p(' + str(x) + ') =', polynomial.eval(x, poly))
except (EOFError, KeyboardInterrupt):
# Exit without error for EOF or ^C. Print a blank line to clear after
# any prompt.
print()
__author__ = 'Nathaniel Klein - Coded on my MBPro - 06/04/15' from polynomial import bisection from polynomial import eval a = 1 b = 7 poly = [-119, 3, -4, 0, 7] tolerance = 1e-12 # Prints the value of the root print(bisection(a, b, poly, tolerance)) # Stores the returned value of the root in rootval rootval = (bisection(a, b, poly, tolerance)) # Evaluates the polynomial at the value of the root print(eval(rootval,poly))
__author__ = 'Nathaniel Klein - Coded on my MBPro - 06/04/15'
import re
from polynomial import eval
x = 17
list = [2, 3, 4, 0, 7]
print("The polynomial evaluates to ", eval(x,list))
print(" at x =", x)
# Repeat until an exception or quit gets us out.
while 1:
# Read a poly until it works. An EOF will except out of the
# program.
while 1:
try:
poly = polynomial.read('Enter a polynomial coefficients: ')
except:
print 'Conversion failed. Please try again.'
else:
break
# Read and evaluate x values until the user types a blank line.
# Again, and EOF will except out of the pgm.
while 1:
resp = raw_input('Enter x value or blank line: ')
if resp == 'quit': raise EOFError
if not resp: break
try:
x = int(resp)
except ValueError:
print "That doesn't look like an integer. Please try again."
else:
print 'p(x) =', polynomial.srep(poly)
print 'p(' + str(x) + ') =', polynomial.eval(x, poly)
except (EOFError, KeyboardInterrupt):
# Exit without error for EOF or ^C. Print a blank line to clear after
# any prompt.
print
except TypeError as msg:
response = "X:TypeError - " + str(msg)
except ValueError as msg:
response = "X:ValueError - " + str(msg)
# if an error has not already occurred
if response is "":
# Error check: must have params length of at least 2
if values[0][:1] is "E":
if len(data) < 2:
response = "X:Invalid argument length - must have (x, poly)"
else:
x = data[0]
poly = data[1:]
response = "E" + str(eval(x,poly))
# Error check: must have params length of at least
elif values[0][:1] is "S":
if len(data) < 4:
response = "X:Invalid argument length - must have (a, b, poly, tolerance)"
else:
a = data[0]
b = data[1]
poly = data[2: len(data)-1]
tolerance = data[len(data) -1]
response = "S" + str(bisection(a, b, poly, tolerance))
else:
response = "X:Invalid Operation Code |" + values[0][:1] + "|"