[Tutor] Random module.. or? CORRECTION

[Bob Gailer]

Bob Gailer wrote:
> Tony Noyeaux wrote:
>   
>> As always, thanks all for the ongoing help and suggestions... the 
>> learning continues.
>>  
>> I've successfully made a number of programs, making use of various 
>> random code.
>>  
>> Using random.choice etc
>> #-----------------------------------
>> import random
>> letters = ('a', 'b', 'c', 'd')
>> a = random.choice(letters)
>> print 'your random letter is %s' %(a)
>> #------------------------------------
>> or
>> #------------------------------------
>> import random
>> letters = ('a', 'a', 'b', 'b', 'c', 'd')
>> a = random.choice(letters)
>> print 'your random letter is %s' %(a)
>> #-----------------------------------
>>  
>> In the first random... , each abcd, has a equal chance of coming out. 
>> In the 2nd random,... a b,.. have an extra chance vs c/d to come out, 
>> making them more likely.
>>  
>> What i would like to experiment now with is,...
>>  
>> How can you control randomness... lets say for fish.
>>  
>> CatfishBreedA
>> Can be say, 4inches, to 24inches long
>> Most fish caught are say 7-14inches long
>> Maybe 1 in 1000 catfish caught are say, 16-20 inches long
>> Maybe 1 in 10000 catfish caught are say, 20inches +
>>  
>> How.. can you program that kind of randomness?
>>  
>> Or another way to look at it.
>>  
>> BasketballerA
>> Can score 4-45pts a game.
>> Most games, he scores 15-25 pts
>> Maybe 1 in 1000 games he scores 30 plus pts
>> Maybe 1 in 10000 he scores 45 pts.
>>  
>> The actual %'s, lengths, and pts are irrelevent,.. they are just used 
>> to as an example.
>>  
>>  
>> Any guidance would be appreciated.
>>     
> 10000 games would  be distributed thus:
>     1 = 45 pts
>    10 = 30+ pts
>  9989 = 15-25 pts CORRECTED
> so generate a random integer between 1 and 10000.
> if it is <= 1 then 45
> else if it is <= 11 then 30+
> else 15-25
>
> Enough to get you going?
>
>   


-- 
Bob Gailer
510-978-4454 Oakland, CA
919-636-4239 Chapel Hill, NC