Tell us what’s happening:
Hello,
it seems the output matches the answer, but still get fails?
Your code so far
import re
def arithmetic_arranger(*problems):
#first to judge if the problem can be continued
if len(problems[0]) > 5:
return "Error: Too many problems."
for strs in problems[0]:
if re.search("[*/]", strs):
return "Error: Operator must be '+' or '-'."
elif re.search("[a-zA-Z]", strs):
return "Error: Numbers must only contain digits."
else:
for i in strs.split():
if len(i)>4:
return "Error: Numbers cannot be more than four digits."
#second start to process the str array for further use
#print(cal)
cal=[]
for item in problems[0]:
cal1=item.split()
if cal1[1]=='+':
cal1.append(int(cal1[0])+int(cal1[2]))
else:
cal1.append(int(cal1[0])-int(cal1[2]))
cal1.append(max(len(cal1[0]),len(cal1[2]),len(str(cal1[3]))+2))
cal.append(cal1)
#third to print the array
#generate print format expression
fmt=''
for j in range(0,len(cal)):#len(cal) columns of equations to print
fmt+=('{:>'+str(cal[j][4])+'}'+' ')
fmt=fmt.strip()
answer=''
if len(cal)==4:
answer=((fmt).format(cal[0][0],cal[1][0],cal[2][0],cal[3][0]))+'\n'+\
((fmt).format(cal[0][1]+' '*(cal[0][4]-len(cal[0][2])-1)+cal[0][2],
cal[1][1]+' '*(cal[1][4]-len(cal[1][2])-1)+cal[1][2],
cal[2][1]+' '*(cal[2][4]-len(cal[2][2])-1)+cal[2][2],
cal[3][1]+' '*(cal[3][4]-len(cal[3][2])-1)+cal[3][2]))+'\n'+\
((fmt).format('-'*cal[0][4],'-'*cal[1][4],'-'*cal[2][4],'-'*cal[3][4]))
elif len(cal)==5:
answer=((fmt).format(cal[0][0],cal[1][0],cal[2][0],cal[3][0],cal[4][0]))+'\n'+\
((fmt).format(cal[0][1]+' '*(cal[0][4]-len(cal[0][2])-1)+cal[0][2],
cal[1][1]+' '*(cal[1][4]-len(cal[1][2])-1)+cal[1][2],
cal[2][1]+' '*(cal[2][4]-len(cal[2][2])-1)+cal[2][2],
cal[3][1]+' '*(cal[3][4]-len(cal[3][2])-1)+cal[3][2],
cal[4][1]+' '*(cal[4][4]-len(cal[4][2])-1)+cal[4][2]))+'\n'+\
((fmt).format('-'*cal[0][4],'-'*cal[1][4],'-'*cal[2][4],'-'*cal[3][4],'-'*cal[4][4]))
if len(problems)>1:
if len(cal)==4:
answer=answer+'\n'+((fmt).format(cal[0][3],cal[1][3],cal[2][3],cal[3][3]))
if len(cal)==5:
answer=answer+'\n'+((fmt).format(cal[0][3],cal[1][3],cal[2][3],cal[3][3],cal[4][3]))
print('answer,length of answer',len(answer))
print(answer)
return answer
The test file is:
class UnitTests(unittest.TestCase):
def test_arrangement(self):
actual = arithmetic_arranger(["3 + 855", "3801 - 2", "45 + 43", "123 + 49"])
expected = " 3 3801 45 123\n+ 855 - 2 + 43 + 49\n----- ------ ---- -----"
print('test,length of test:',len(" 3 3801 45 123\n+ 855 - 2 + 43 + 49\n----- ------ ---- -----"))
print(" 3 3801 45 123\n+ 855 - 2 + 43 + 49\n----- ------ ---- -----")
'''
etc.
'''
def test_solutions(self):
actual = arithmetic_arranger(["32 - 698", "1 - 3801", "45 + 43", "123 + 49"], True)
expected = " 32 1 45 123\n- 698 - 3801 + 43 + 49\n----- ------ ---- -----\n -666 -3800 88 172"
self.assertEqual(actual, expected, 'Expected solutions to be correctly displayed in output when calling "arithmetic_arranger()" with arithmetic problems and a second argument of `True`.')
print('test,length of test:',len(" 32 1 45 123\n- 698 - 3801 + 43 + 49\n----- ------ ---- -----\n -666 -3800 88 172"))
print(" 32 1 45 123\n- 698 - 3801 + 43 + 49\n----- ------ ---- -----\n -666 -3800 88 172")
The result is:
answer,length of answer 98
3 3801 45 123
+ 855 - 2 + 43 + 49
----- ------ ---- -----
test,length of test: 98
3 3801 45 123
+ 855 - 2 + 43 + 49
----- ------ ---- -----
answer,length of answer 122
11 3801 1 123 1
+ 4 -2999 + 2 + 49 - 9380
---- ----- --- ----- -------
F..answer,length of answer 139
32 1 45 123
- 698 - 3801 + 43 + 49
------ ------- ---- -----
-666 -3800 88 172
F..
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Challenge: Arithmetic Formatter
Link to the challenge:
