Re: [Tutor] Urgent Help Required
On 02/04/2012 08:17 AM, Zafrullah Syed wrote: Hi, I need urgent help: I am unable to commit code to svn, I am getting this warning: *svn: Commit failed (details follow):* *svn: Commit blocked by pre-commit hook (exit code 1) with output:* *:17: Warning: 'with' will become a reserved keyword in Python 2.6* *writeConf.py:17: invalid syntax* *Commited Python-Files refused, please check and retry...* How do i surpass this and commit my code?? Lousy choice of subject. Please make your subject reflect what your problem is, not how important it may or may not be to you. You're not just running svn. If you were, you'd not get some python error or warning. So you're running a more complex environment, perhaps svn integrated inside some IDE (like komodo, wingware, beans, whatever). If so, post a question on the forum that supports that particular IDE. Or if you must post here, at least give us a clue what environment you're using. For example, i can infer that you're running Python 2.5 or older. But it'd be much better to explicitly say what python version, which operating system (and version), and what IDE (and version), and what svn (get the pattern?). The svn command to submit changes to a file outside of the ide is svn commit filename. If the file is new, I believe you have to do an svn add. -- DaveA ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Urgent Help Required
Hi, I need urgent help: I am unable to commit code to svn, I am getting this warning: *svn: Commit failed (details follow):* *svn: Commit blocked by pre-commit hook (exit code 1) with output:* *:17: Warning: 'with' will become a reserved keyword in Python 2.6* *writeConf.py:17: invalid syntax* *Commited Python-Files refused, please check and retry...* How do i surpass this and commit my code?? -- Regards, Zafrullah Syed ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] urgent help!!!!!!!!!!!
On 11/17/2011 3:26 PM ADRIAN KELLY said... i know i'm stupid but i have tried everything to get one line of text working, i have written out pseudo and read every website. now i am getting this error Traceback (most recent call last): File "F:\VTOS ATHLONE\PYTHON_VTOS\foreign exchange\f_ex4 - Copy.py", line 24, in main() File "F:\VTOS ATHLONE\PYTHON_VTOS\foreign exchange\f_ex4 - Copy.py", line 14, in main while amount<50: UnboundLocalError: local variable 'amount' referenced before assignment You've seen the fixes, but perhaps more explanation helps too. Python organizes variables into namespaces. The normal namespace resolution sequence is local, global, builtin. Assigning to a name within a function creates a local variable, otherwise accessing a name in a function will use the global or builtin namespaces. Python decides these issues in part during initial loading of the module where it sees that you assign to the variable amount within the function, thus creating a local variable. Later, during execution, you first test the value of amount (in the while statement), but amount isn't assigned to until after the test, ergo, UnboundLocalError. HTH, Emile ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] urgent help!!!!!!!!!!!
def exchange(cash_in):
euro=1
dollar=1.35
base=50
if cash_in>base:
totalreturn=cash_in*dollar
else:
totalreturn=0
return totalreturn
amount=0
# this would be better placed inside the main function.
def main():
while amount<50:
amount = raw_input(float('how much do you want to change:'))
# This should be
# amount = float( raw_input('how much do you want to change:' ) )
if amount<50:
total=0
print 'enter an amount over 50: '
else:
total=exchange(amount)
print 'Your exchange comes to: ',total
Ramit
Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
712 Main Street | Houston, TX 77002
work phone: 713 - 216 - 5423
--
This email is confidential and subject to important disclaimers and
conditions including on offers for the purchase or sale of
securities, accuracy and completeness of information, viruses,
confidentiality, legal privilege, and legal entity disclaimers,
available at http://www.jpmorgan.com/pages/disclosures/email.
___
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] urgent help!!!!!!!!!!!
My mail client stripped new lines, at least on this machine, so I will
just top-post this. Sorry!
Your problem is that you say:
amount=0
def main()...
You then try to use amount in main, but main has no amount in it.
Either move "amount=0" inside main, or put a global reference:
amount=0
def main():
global amount
...
On 11/17/11, ADRIAN KELLY wrote:
>
> i know i'm stupid but i have tried everything to get one line of text
> working, i have written out pseudo and read every website.now i am
> getting this error
> Traceback (most recent call last): File "F:\VTOS
> ATHLONE\PYTHON_VTOS\foreign exchange\f_ex4 - Copy.py", line 24, in
> main() File "F:\VTOS ATHLONE\PYTHON_VTOS\foreign exchange\f_ex4 -
> Copy.py", line 14, in mainwhile amount<50:UnboundLocalError: local
> variable 'amount' referenced before assignment>>>
>
>
> def exchange(cash_in):euro=1dollar=1.35base=50if
> cash_in>base:totalreturn=cash_in*dollarelse:
> totalreturn=0return totalreturn
> amount=0def main():while amount<50:amount = raw_input(float('how
> much do you want to change:'))if amount<50:total=0print
> 'enter an amount over 50: 'else:total=exchange(amount)
> print 'Your exchange comes to: ',total
>
>
>
>
> Adrian Kelly
> 1 Bramble Close
>
> Baylough
>
> Athlone
>
> County Westmeath
>
> 0879495663
>
>
> From: waynejwer...@gmail.com
> Date: Thu, 17 Nov 2011 16:53:59 -0600
> Subject: Re: [Tutor] please help - stuck for hours
> To: kellyadr...@hotmail.com
> CC: tutor@python.org
>
> On Thu, Nov 17, 2011 at 4:32 PM, ADRIAN KELLY
> wrote:
>
>
>
>
>
>
>
>
> thanks very much, great response really really appreciated it and now i
> understand. i hate to ask again but can you see why it won't print the
> 'enter and amount over 50' in the right place??
>
>
> Computers are unfailingly stupid machines. They will do whatever wrong thing
> you tell them to do every single time.
>
> def main():amount=0while amount<50:amount =
> input('how much do you want to change:')
>
> print 'enter an amount over €50: 'else:
> total=exchange(amount)print 'Your exchange comes to: ',total
>
>
> Sometimes it helps writing out the logic in steps before you translate it to
> code. In this case my guess is that these are the steps you want:
> 1. Get a value from the user (you're still using input - stop that, it's
> dangerous! input is only a good function in 3.x where it replaces
> raw_input)
>
>2. If the value is less than 50, tell the user to enter an amount > 50
> and repeat step 1
> 3. Otherwise, exchange the amount and display that.
> Right now, these are the steps that you're doing:
>
>
> 1. Get a value from the user
> 2. Display the error message
> 3. If the value is < 50, go to 1
> 4. exchange the amount
>
>
> 5. display the amount.
> HTH,Wayne
--
Have a great day,
Alex (msg sent from GMail website)
mehg...@gmail.com; http://www.facebook.com/mehgcap
___
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
[Tutor] urgent help!!!!!!!!!!!
i know i'm stupid but i have tried everything to get one line of text working,
i have written out pseudo and read every website.now i am getting this
error
Traceback (most recent call last): File "F:\VTOS ATHLONE\PYTHON_VTOS\foreign
exchange\f_ex4 - Copy.py", line 24, in main() File "F:\VTOS
ATHLONE\PYTHON_VTOS\foreign exchange\f_ex4 - Copy.py", line 14, in main
while amount<50:UnboundLocalError: local variable 'amount' referenced before
assignment>>>
def exchange(cash_in):euro=1dollar=1.35base=50if cash_in>base:
totalreturn=cash_in*dollarelse:totalreturn=0return
totalreturn
amount=0def main():while amount<50:amount = raw_input(float('how
much do you want to change:'))if amount<50:total=0print
'enter an amount over 50: 'else:total=exchange(amount)print
'Your exchange comes to: ',total
Adrian Kelly
1 Bramble Close
Baylough
Athlone
County Westmeath
0879495663
From: waynejwer...@gmail.com
Date: Thu, 17 Nov 2011 16:53:59 -0600
Subject: Re: [Tutor] please help - stuck for hours
To: kellyadr...@hotmail.com
CC: tutor@python.org
On Thu, Nov 17, 2011 at 4:32 PM, ADRIAN KELLY wrote:
thanks very much, great response really really appreciated it and now i
understand. i hate to ask again but can you see why it won't print the 'enter
and amount over 50' in the right place??
Computers are unfailingly stupid machines. They will do whatever wrong thing
you tell them to do every single time.
def main():amount=0while amount<50:amount = input('how
much do you want to change:')
print 'enter an amount over €50: 'else:
total=exchange(amount)print 'Your exchange comes to: ',total
Sometimes it helps writing out the logic in steps before you translate it to
code. In this case my guess is that these are the steps you want:
1. Get a value from the user (you're still using input - stop that, it's
dangerous! input is only a good function in 3.x where it replaces raw_input)
2. If the value is less than 50, tell the user to enter an amount > 50 and
repeat step 1
3. Otherwise, exchange the amount and display that.
Right now, these are the steps that you're doing:
1. Get a value from the user
2. Display the error message
3. If the value is < 50, go to 1
4. exchange the amount
5. display the amount.
HTH,Wayne ___
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] urgent help required! invalid syntax
There's a few things I've noticed: 1. I would recommend using an IDE of some sort. I copy and pasted this into eclipse, and it told me straight away that you had a parenthesis problem on this line: d1=(log(s/x)+((r+v**2/2)*t)/(v*sqrt(t)) 2. Your function "dividend" isn't returning a value. 3. Unless there is more to the program that you haven't shown us, all of the math stuff that I can see, such as sqrt, pi, log, exp and possibly others I'm not thinking of should be prefixed with math.. 4. The function BS isn't returning anything. 5. Lastly, if you are a familiar with object oriented programing, the black scholes is better suited towards OOP. 2011/2/18 lim chee siong > > > Hi, > > I was writing a module for the black-scholes pricing model in python, but I > keep getting this error message: > > Traceback (most recent call last): > File "", line 1, in > File "C:\Python26\lib\blackscholes.py", line 25 > d2=d1-v*sqrt(t) > > > This is the code in my blackscholes.py file: > #Black-Scholes model > > import math > import numpy > import scipy > > #Cumulative normal distribution > > def CND(x): > > > (a1,a2,a3,a4,a5)=(0.31938153,-0.356563782,1.781477937,-1.821255978,1.330274429) > L=abs(x) > K=1.0/(1.0+0.2316419*L) > > w=1.0-1.0/sqrt(2*pi)*exp(-L*L/2)*(a1*K+a2*K*K+a3*pow(K,3)+a4*pow(K,4)+a5*pow(K, > 5)) > if x<0: > w=1.0-w > return w > > #s: price of underlying stockx:strike price > #r: continuously compounded risk free interest rate > #t: time in years until expiration of option > #v: implied volatility of underlying stock > > def dividend(s,x,r,t,v): > d1=(log(s/x)+((r+v**2/2)*t)/(v*sqrt(t)) > d2=d1-v*sqrt(t) > > def BS(s,x,r,t,v): > c=s*CND(d1)-x*exp(-r*t)*CND(d2) > p=x*exp(-r*t)*CND(-d2)-s*CND(-d1) > delta=CND(d1)-1 > gamma=CND(d1)/(s*v*sqrt(t)) > vega=s*CND(d1)*sqrt(t) > theta=-((s*CND(d1)*v)/(2*sqrt(t))+r*x*exp(-r*t)*CND(-d2) > rho=-x*t*exp(-r*t)*CND(-d2) > > > What is wrong here? What do I need to change? Thanks! Quick reply will be > much appreciated because the deadline is tomorrow! > > > ___ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] urgent help required! invalid syntax
lim chee siong wrote: > > > Hi, > I was writing a module for the black-scholes pricing model in python, but I > keep getting this error message: > Traceback (most recent call last): File "", line 1, in File > "C:\Python26\lib\blackscholes.py", line 25d2=d1-v*sqrt(t) Please COPY AND PASTE the FULL error message, including the entire traceback. Do not re-type it, summarise it, simplify it, or change it in any other way. But my guess is that you're probably missing a closing bracket ) on that line, or the one before it. -- Steven ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] urgent help required! invalid syntax
Hi, I was writing a module for the black-scholes pricing model in python, but I keep getting this error message: Traceback (most recent call last): File "", line 1, in File "C:\Python26\lib\blackscholes.py", line 25d2=d1-v*sqrt(t) This is the code in my blackscholes.py file:#Black-Scholes model import mathimport numpyimport scipy #Cumulative normal distribution def CND(x): (a1,a2,a3,a4,a5)=(0.31938153,-0.356563782,1.781477937,-1.821255978,1.330274429) L=abs(x) K=1.0/(1.0+0.2316419*L) w=1.0-1.0/sqrt(2*pi)*exp(-L*L/2)*(a1*K+a2*K*K+a3*pow(K,3)+a4*pow(K,4)+a5*pow(K,5)) if x<0:w=1.0-w return w #s: price of underlying stockx:strike price#r: continuously compounded risk free interest rate#t: time in years until expiration of option#v: implied volatility of underlying stock def dividend(s,x,r,t,v): d1=(log(s/x)+((r+v**2/2)*t)/(v*sqrt(t)) d2=d1-v*sqrt(t) def BS(s,x,r,t,v): c=s*CND(d1)-x*exp(-r*t)*CND(d2) p=x*exp(-r*t)*CND(-d2)-s*CND(-d1) delta=CND(d1)-1 gamma=CND(d1)/(s*v*sqrt(t)) vega=s*CND(d1)*sqrt(t) theta=-((s*CND(d1)*v)/(2*sqrt(t))+r*x*exp(-r*t)*CND(-d2) rho=-x*t*exp(-r*t)*CND(-d2) What is wrong here? What do I need to change? Thanks! Quick reply will be much appreciated because the deadline is tomorrow! ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] urgent help required! invalid syntax
On 18-02-11 09:42, lim chee siong wrote: > > > Hi, > > I was writing a module for the black-scholes pricing model in python, > but I keep getting this error message: > > Traceback (most recent call last): > File "", line 1, in > File "C:\Python26\lib\blackscholes.py", line 25 > d2=d1-v*sqrt(t) That's not the whole traceback, is it? > > This is the code in my blackscholes.py file: > #Black-Scholes model > > [snip] > > def dividend(s,x,r,t,v): > d1=(log(s/x)+((r+v**2/2)*t)/(v*sqrt(t)) > d2=d1-v*sqrt(t) > > [snip] > > > What is wrong here? What do I need to change? Check the line before the line which throws a syntax error. Have a good look at it and you will see you are missing a character. Cheers, Timo > Thanks! Quick reply will be much appreciated because the deadline is > tomorrow! > > > ___ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Urgent: Help
Please reply to the list not just me. We all participate and learn. Shumail Siddiqui wrote: > I know this assignment is not too hard, but I have been greatly > overwhelmed with work as I have been taking a 19 credits recently. I > kind of have an approach to this by importing random numbers and > random.choice leaves the first four numbers as a result. But, I don't > know how to add these numbers in the program, One approach is: start with a total of 0 add the first number to the total if the total does not reach the goal add the next number etc. That can be implemented in a loop. Give it a try and show us how far you can come. > while I know that I can use append to add those scores. I don't know how to use append to add ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Urgent: Help
Very good questions indeed. Also familiar ones to me. The first is
Exercise 5.28 and the second is Exercise 5.23 from the text book
"Object-Oriented Programming in Python."
Alan's advice was very sound, but I strongly recommend that you work
with your instructor in guiding you through these problems. He or she
is best qualified to know your current level and the context for such
a homework assignment. Of course, reading the book is also likely to
help.
For everyone else, if you like these exercises there are 300 more
where they came from. ;-)
With regard,
Michael
+---
| Michael Goldwasser
| Associate Professor
| Dept. Mathematics and Computer Science
| Saint Louis University
| 220 North Grand Blvd.
| St. Louis, MO 63103-2007
On Sunday January 6, 2008, Shumail Siddiqui wrote:
> Investment Thresholds
>
> Define a Python function threshold(dailyGains, goal) that behaves as
> follows. The first parameter is a list of integers that represent the daily
> gains in the value of a stock. The second paramter is a single positive
> number that is a profit goal. The function should return the minimum number
> of days for which the stock should be owned in order to achieve a profit that
> is equal to or greater than the stated goal. If the goal is unreachable, the
> function should return 0.
>For example,
>threshold ([5, 3, 8, 2, 9, 1], 17)
>should return 4 because the goal (17) can be reached after the first four
> days (e.g., 5 + 3 + 8 + 2).
>
> Write a small Python program that uses your threshold() function to
> demonstrate that it works correctly. Your program may use a pre-defined list
> of stock gains or it may generate one randomly (see the "Helpful Hints"
> section below for tips on how to do this). Your program should display this
> list, prompt the user to enter a profit goal, and then print out the total
> number of days required to reach that goal (or a message stating that the
> goal is impossible).
> Word Windows
>
> Define a Python function sliding(word, num) that behaves as follows.
> It should print out each num-length slice of the original word , aligned
> vertically as shown below.
>For example, a call to sliding("examples", 4) should produce the output
>
>exam xampampl mple ples
>
>
> Write a small Python program to demonstrate that your sliding()
> function works correctly. Your program should prompt the user to enter a word
> and a window size, and then call sliding() with those values.
___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Urgent: Help
Shumail Siddiqui wrote: > Dear tutor, > I have a question regarding a functions based assignment. I agree with Alan. And I wonder why this assignment is hard for you. Are you in the wrong course (insufficient prerequisites)? Is the instructor failing to provide the resources you need? Are you overwhelmed with life and struggling to get through? Or do you just want to get a passing grade and don't care about learning programming and Python? It might help us if we understood why you are seeking help. Bob ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Urgent: Help
"Shumail Siddiqui" <[EMAIL PROTECTED]> wrote > I have a question regarding a functions based assignment. The > assignment is: > For this project, you will write two small Python programs: > OK, Since this is for homework I cannot give you the answers but I will point out some things you shouild look at and an approach. > Investment Thresholds > > Define a Python function threshold(dailyGains, goal) that > behaves as follows. First define the function and test it using the >>> prompt. > Write a small Python program that uses your threshold() > function > to demonstrate that it works correctly. Your program may use a > pre-defined list of stock gains or it may generate one randomly Use a predefined list initially, it's easier! Only once that works try introducing random elements. > Word Windows One problem at a time... > This is what I have so far: > > import random > dailyGains = int(random.range(6)) > goal = random.choice(range(4) missing parenthesis, I assume a typo? > result = [] > def threshold(dailyGains, goal): > if goal!= result: 0 > else: >result.reverse() >result.remove() you need to investigate the return statement in functions. However I don;t understand how you think this will achieve anything like what the original specification asked for. You need to use the dailyGains list somewhere... And why you are checking against result I don't know. Can you describe in English what the function should do and how you would go about it manually using pen and paper? Can you translate that process to Python? > As you can see I am having a great problem. It looks like the normal learning process to me :-) Just take your time, solve one bit at a time and build on your previous work. If you get stuck come back here and ask specific questions and show us what you have done. HTH, -- Alan Gauld Author of the Learn to Program web site http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Urgent: Help
Dear tutor,
I have a question regarding a functions based assignment. The assignment
is:
For this project, you will write two small Python programs:
Investment Thresholds
Define a Python function threshold(dailyGains, goal) that behaves as
follows. The first parameter is a list of integers that represent the daily
gains in the value of a stock. The second paramter is a single positive number
that is a profit goal. The function should return the minimum number of days
for which the stock should be owned in order to achieve a profit that is equal
to or greater than the stated goal. If the goal is unreachable, the function
should return 0.
For example,
threshold ([5, 3, 8, 2, 9, 1], 17)
should return 4 because the goal (17) can be reached after the first four days
(e.g., 5 + 3 + 8 + 2).
Write a small Python program that uses your threshold() function to
demonstrate that it works correctly. Your program may use a pre-defined list of
stock gains or it may generate one randomly (see the "Helpful Hints" section
below for tips on how to do this). Your program should display this list,
prompt the user to enter a profit goal, and then print out the total number of
days required to reach that goal (or a message stating that the goal is
impossible).
Word Windows
Define a Python function sliding(word, num) that behaves as follows. It
should print out each num-length slice of the original word , aligned
vertically as shown below.
For example, a call to sliding("examples", 4) should produce the output
exam xampampl mple ples
Write a small Python program to demonstrate that your sliding() function
works correctly. Your program should prompt the user to enter a word and a
window size, and then call sliding() with those values.
Helpful Hints
Python contains a set of facilities to handle random number generation. Full
details are available at http://docs.python.org/lib/module-random.html. A quick
summary is as follows:
Add the statement
import random
at the beginning of your program source code. This tells Python where to find
the code that describes how to generate random values.
Pass your list of values to the random.choice() function. The function
will return a single randomly-selected element from that list.
For example, random.choice(range(5)) will return a random value in the range
0-4.
Please note that "random" does not necessarily mean "unique"; sequential calls
to this function may return the same answer, because it is randomly chosen each
time!
This is what I have so far:
import random
dailyGains = int(random.range(6))
goal = random.choice(range(4)
result = []
def threshold(dailyGains, goal):
if goal!= result: 0
else:
result.reverse()
result.remove()
As you can see I am having a great problem.
-
Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
