/sci/ - Science & Math

[Anonymous No.5090162]

total = 0
month = raw_input('Print the current month in all underscore: ')
day = input('Print dya of the month with integers: ')
try:
number = int(day)
except ValueError:
print(day, "is not an integer.")
else:
if month == "january":
total + day
print month, day, 'is the day #', total
elif month == "february":
total = 31 + day
print month, day, 'is the day #', total
else:
print 'you misspelled the month'


why doesn't this check is the day input is integer or not. it just crashes. WTF

[Anonymous No.5090172]

bump

[Anonymous No.5090177]

By "just crashes," what do you mean? Does it compile? Do you get any output?

Also,
> if month == "january"
> total + day
I'm assuming that's wrong.

[Anonymous No.5090181]

>>5090177
its just another if loop for each of the 1 2months.
you are right. it doesn't crash. it says
"day = input('Print day of the month with integers: ')
File "<string>", line 1
NameError: name 'h' is not defined"

this happens if i put "h" instead of an integer for variable day

[Anonymous No.5090184]

>>5090177
what i am tryign to do is make it say that the input is not an integer, when i input somethign other then a number

[Anonymous No.5090187]

Use raw_input instead of input.

input evaluates the entered text.

So when input encounters h, python thinks, "oh shit, where is variable h?"

I think.

Just use raw_input().

[Anonymous No.5090188]

day = input('Print day of the month with integers: ')
try:
number = int(day)
except ValueError:
print(number, "is not an integer.")
else:
print 'integer'


this is the part that doesn't want to work.
if i enter anything but a number it says"File "Untitled", line 1
day = input('Print day of the month with integers: ')
File "<string>", line 1
NameError: name 'h' is not defined"

how do i make it work?

[Anonymous No.5090190]

>>5090177
does python code compile, fucking pleb

[Anonymous No.5090192]

>>5090187
day = raw_input('Print day of the month with integers: ')
try:
number = int(day)
except ValueError:
print(number, "is not an integer.")
else:
print 'integer'


i try to say "h"

it returns:
ile "Untitled", line 5
print(number, "is not an integer.")
NameError: name 'number' is not defined

[Anonymous No.5090194]

bump

[Anonymous No.5090195]

>>5090192
Well, the problem is probably here:

>number = int(day)

First, this calls int() on day. If that succeeds, it sets number to the result. Calling int() on day causes an error, which is caught by the try and passed to the except clause. So, number isn't actually ever set to anything.

[Anonymous No.5090199]

>>5090195
this is my second week learning python. i'm trying to understand what you're telling me, but i'm doomed for tonight. how do i fix this?
i need it to return"not an integer" if the input is anything but a number

[Anonymous No.5090203]

>>5090190
> doesn't realize that Python doesn't need to be run in an interpreter
> doesn't understand benefits of debugging through compilation

[Anonymous No.5090204]

>>5090199
Something like:
print(day, "is not an integer.")

Because day has been set to the raw input.
The variable number doesn't get set to anything before the exception occurs.

[Anonymous No.5090209]

input() inputs a string and tries to execute it. raw_input() just inputs the string. So just use raw_input() instead.

http://docs.python.org/library/functions.html#input

>Equivalent to eval(raw_input(prompt)).
>...
>Consider using the raw_input() function for general input from users.

[Anonymous No.5090210]

>>5090204
omfg yes!
thank you.

P.S.

why won't something like this work?

x = raw_input('now')
if x == int:
print 'integer'
else:
print 'not an int'

[Anonymous No.5090214]

total = 0
day = input('Print day of the month with integers: ')
try:
number = int(day)
except ValueError:
print(day, "is not an integer.")
else:
total = 0
month = raw_input('Print the current month in all underscore: ')
if month == "january":
total + day
print month, day, 'is the day #', total
elif month == "february":
total = 31 + day
print month, day, 'is the day #', total
elif month == "march":
total = 59 + day
print month, day, 'is the day #', total
elif month == "april":
total = 90 + day
print month, day, 'is the day #', total
elif month == "may":
total = 120 + day
print month, day, 'is the day #', total
elif month == "june":
total = 151 + day
print month, day, 'is the day #', total
elif month == "july":
total = 181 + day
print month, day, 'is the day #', total
elif month == "august":
total = 212 + day
print month, day, 'is the day #', total
elif month == "september":
total = 243 + day
print month, day, 'is the day #', total
elif month == "october":
total = 273 + day
print month, day, 'is the day #', total
elif month == "november":
total = 304 + day
print month, day, 'is the day #', total
elif month == "december":
total = 334 + day
print month, day, 'is the day #', total
else:
print 'you misspelled the month'

[Anonymous No.5090216]

>>5090214
it fucked up again. it worked by itself, but when i put it back into the program, it says that error and 'h' is not defined. why would i need to define the input?

[Anonymous No.5090217]

>>5090210
Well, I'm not a python expert, but "a == b" usually means "is a equal to b?" not "is a one kind of b?".

Some languages have a typeof operator. Don't know about python. Your thought process isn't unreasonable, though!

[Anonymous No.5090221]

>>5090216
I've already explained that you should use raw_input() rather than input().

If you raw_input 6+4 python understands that to be the string "6+4".

If you input 6+4 python attempts to evaluate that, and understands it as 10.

If you raw_input h+5 python understands it to be the string "h+5".

If you input h+5, python attempts to evaluate it, and looks for variable h...

[Anonymous No.5090222]

>>5090217
It would be
type(x) == int
but raw_input does not return type int (integer); it returns type str (string).

[Anonymous No.5090226]

>>5090222
Gotcha, thanks for the explanation.

OP, I'm off to bed. Good luck with your debugging.

Read the python tutorial, and refer to example code whenever you can. S'all over the internet.

[Anonymous No.5090225]

day = raw_input('Print day of the month with integers: ')
try:
number = int(day)
except ValueError:
print(day, "is not an integer.")
else:
month = raw_input('Print the current month in all underscore: ')
if month == 'january':
print month, day, 'is the day #', day
elif month == 'february':
print month, day, 'is the day #', int(day)+31


this finally works

[Anonymous No.5090230]

last question.

after the error, the execution of the script stops.
how do i make it repeat? as in keep asking until a correct type of answer is given?

[Anonymous No.5090231]

PROTIP: Don't reinvent the wheel.

import time

month = raw_input('Print the current month in all underscore: ')
day = input('Print dya of the month with integers: ')

try:

print month, day, 'is the day #', time.strptime(month+" "+day, "%B %d").tm_yday

except:

print "you dun goofed"

[Anonymous No.5090241]

>>5090230

import time

while True:
~~~~month = raw_input('Print the current month in all underscore: ')
~~~~day = raw_input('Print dya of the month with integers: ')

~~~~try:
~~~~~~~~total = time.strptime(month+" "+day, "%B %d").tm_yday
~~~~~~~~break
~~~~except:
~~~~~~~~print "try again, dumbass"

print month, day, 'is the day #', total

[Anonymous No.5090242]

>>5090231
i don;t know what those % mean, too complicated at this point. i'm a newfag at programming

[Anonymous No.5090243]

>>5090242
That specifies the format that the parse function (strptime) should expect the entered date to be in.

http://www.tutorialspoint.com/python/time_strptime.htm

[Anonymous No.5090246]

>>5090243
thanks.

i'm happy it works, no matter how bad the script is

[Anonymous No.5090248]

Assume that fruit is a list containing strings representing the names of various fruit. Give a
command or a sequence of commands that produces a single string diet containing all the fruit
from the list, alphabetized and with spaces and with a ‘+’ sign between each fruit.

how would i do this?

[Anonymous No.5090252]

>>5090248
"+".join(fruit)

[Anonymous No.5090251]

>>5090248
what does it mean to give a command?
does it mean i need to enter something in order for it to be executed? and then won't it give the ame list back?

[Anonymous No.5090255]

>>5090248
" + ".join(sorted(fruit))

[Anonymous No.5090259]

>>5090255
could you please elaborate...

[Anonymous No.5090262]

>>5090259

In order to produce a single string diet containing all the fruit from the list, alphabetized and with spaces and with a ‘+’ sign between each fruit, enter the command " + ".join(sorted(fruit))

[Anonymous No.5090263]

>>5090262
where woudl i put that in the code? just print it in the shell?

[Anonymous No.5090266]

>>5090262
yes. i am a retard. thank you

[Anonymous No.5090267]

fruit = ['apple', 'orange', 'pear', 'apricot']
diet =" + ".join(sorted(fruit))
print diet

programming isn't that bad

[Anonymous No.5090284]

this is the last one, and i'm finished.

Assume that person is a string of the general form:
‘firstName middleName lastName’
Give a command or a series of commands that result in the creation of the corresponding string
‘firstName middleInitial. lastName’. For example: if person = ‘Henry Joseph
Carr’, the result should be ‘Henry J. Carr’.

any tips on how to split the input? or should i keep it intro 3 different inputs?

[Anonymous No.5090287]

bump

[Anonymous No.5090294]

>>5090284
inp = raw_input("asdf: ")
l = split(inp)
l[1] = l[1][0]+"."
print " ".join(l)

[Anonymous No.5090311]

>>5090294
person = raw_input("Enter full name: ")
l = person.split()
l[1] = l[1][0]+"."
print " ".join(l)


this worked. thank you

[Anonymous No.5090331]

fuck fuck fuck

there is one more part.

i'll do most of it myself, but i can't figure out how to do one thing.

Write a program that asks the user for their height and weight and reports the BMI. The user
should enter the height in a format such as 5’ 8” to signify 5 feet 8 inches

how do i format..say from 3' 11" to 47inches?

[Anonymous No.5090332]

>>5090331
if it is a string input that is...

[Anonymous No.5090336]

bump

[Anonymous No.5090344]

>>5090336
last bump

[Anonymous No.5090349]

weight = input('Enter your weight in pounds: ')
height = input('Enter your height in inches : ')
BMI = 703.*(float(weight)/height**2)
print 'Your BMI is: ',BMI

this is jus tinches. what do i do, if the user enters 6' 2"?

[Anonymous No.5090352]

>>5090349
First, you need to check if it contains " or '
then, you can use str.split() - look up the function
use str.split("'") and str.split('"'") (these are different, look close)
Finally, pick the right numbers and do some math work