A
aleksander.helgaker
I've completely rewritten a calculator I wrote to help me learn Python.
After someone told me about the def command I reliesed that I could
make the program much better, but there is a very anoying problem which
ocours when I run the program.
Here is the code
<code>
# IMPOSRTS #
import sys
import os
# DEF'S #
def print_intro():
os.system('clear')
print "Welcome to Calc v 0.1a"
print "----------------------"
def main():
print_intro()
while True:
prompt_user()
def prompt_user():
userinput = input(">")
def fib(n): # write Fibonacci series up to n
"""Print a Fibonacci series up to n."""
a, b = 0, 1
while b < n:
print b,
a, b = b, a+b
print
def quit():
sys.exit()
# PROGRAM FLOW
main()
</code>
Now when I run this program and I type in a command which I have no
code for e.g. "pi" (which is 3,14....) I get the error message
"NameError: name 'pi' is not defined" and then the program quits.
I'm creating this program for my own use but naturally sometimes I
would make spelling mistakes (being a dyslexic and all) and so having a
long error message and having the program quit is more then a bit
irritating. It would be much more preferable if the program simply
wrote "Command not recognised" and then kept going. Is this possible?
After someone told me about the def command I reliesed that I could
make the program much better, but there is a very anoying problem which
ocours when I run the program.
Here is the code
<code>
# IMPOSRTS #
import sys
import os
# DEF'S #
def print_intro():
os.system('clear')
print "Welcome to Calc v 0.1a"
print "----------------------"
def main():
print_intro()
while True:
prompt_user()
def prompt_user():
userinput = input(">")
def fib(n): # write Fibonacci series up to n
"""Print a Fibonacci series up to n."""
a, b = 0, 1
while b < n:
print b,
a, b = b, a+b
def quit():
sys.exit()
# PROGRAM FLOW
main()
</code>
Now when I run this program and I type in a command which I have no
code for e.g. "pi" (which is 3,14....) I get the error message
"NameError: name 'pi' is not defined" and then the program quits.
I'm creating this program for my own use but naturally sometimes I
would make spelling mistakes (being a dyslexic and all) and so having a
long error message and having the program quit is more then a bit
irritating. It would be much more preferable if the program simply
wrote "Command not recognised" and then kept going. Is this possible?