Python Forum

Good news! I did something like this:

import random
import string
number=random.randrange(1500)+1
letter=random.choice(['a','b','c','d','e','f','g','h'])
dot='.'
for i in range(100):
    number=random.randrange(1500)+1
    letter1=random.choice(['a','b','c','d','e','f','g','h'])
    letter2=random.choice(['a','b','c','d','e','f','g','h'])
    letter3=random.choice(['a','b','c','d','e','f','g','h'])
    letter4=random.choice(['a','b','c','d','e','f','g','h'])
    print(number,dot,letter1,letter2,letter3,letter4)

It isnt useless to make a dot after the number (240., 321., etc.) It always make with a space but it is just a cosmetic error. Doesnt care.
Now I expect to use if or something like this to determinate the numbers and letters not to repeat. I need to think about how to do it.

You can also use a while loop like :

import random
count = 1
while count <= 100 :
    num1 = random.randint(1,1501)
    str1 = random.choice(['a','b','c','d','e','f','g','h'])
    str2 = random.choice(['a','b','c','d','e','f','g','h'])
    str3 = random.choice(['a','b','c','d','e','f','g','h'])
    str4 = random.choice(['a','b','c','d','e','f','g','h'])
    final_ans = str(num1) + str1 + str2 + str3 + str4
    print(f"Number {count} : {final_ans}")
    count += 1

And output :

Output:
Number 1 : 379fegf
Number 2 : 1092hhhg
Number 3 : 1270gfha
.....

---

(May-28-2020, 10:04 AM)Harambe Wrote: [ -> ]Now I expect to use if or something like this to determinate the numbers and letters not to repeat. I need to think about how to do it.

Do you mean like the number or letter shouldn't be repeated in 1 given instance?

Thank you for advice, but I need output like this:

Output:
21. a,f,g,h
45. b,c,e,g
77. a,d,f,h
394. b,c,d,g
...

It would be nice if there is any poissibility to sort the numbers and letters in the order (1, 2, 3, 4 and a, b, c, d, etc...)
Btw, what is

 print(f"Number {count} : {final_ans}") 

“f” here for?

(May-28-2020, 10:25 AM)Harambe Wrote: [ -> ]Thank you for advice, but I need output like this:

Output:
21. a,f,g,h
45. b,c,e,gis 
77. a,d,f,h
394. b,c,d,g
...

Sure, no problem - I just wanted to show you another way of doing so

(May-28-2020, 10:25 AM)Harambe Wrote: [ -> ]Btw, what is

 print(f"Number {count} : {final_ans}") 

“f” here for?

The f in the given line is a formatted string - to know more see this or this (I'd recommend this one)
Formatted strings can also be written as

print("Number %s : %s" % (count,final_ans))

or

print("Number {} : {}" .format(count,final_ans))

However, the most preferred one would be the one i posted in the code the f-string formatting - they came into use in Python 3.6 and are one of its greater advantages

(May-28-2020, 10:25 AM)Harambe Wrote: [ -> ]It would be nice if there is any poissibility to sort the numbers and letters in the order (1, 2, 3, 4 and a, b, c, d, etc...)

Do you mean like in ascending order?

Yes, in ascending order. Meanwhile I was thinking about this:

import random
number=random.randrange(1500)+1
letter=random.choice(['a','b','c','d','e','f','g','h'])
dot='.'
for i in range(100):
    number=random.randrange(1500)+1
    letter1=random.choice(['a','b','c','d','e','f','g','h'])
    letter2=random.choice(['a','b','c','d','e','f','g','h'])
    letter3=random.choice(['a','b','c','d','e','f','g','h'])
    letter4=random.choice(['a','b','c','d','e','f','g','h'])
    if letter1='a':
        print(letter2=random.choice(['b','c','d','e','f','g','h'])
    elif letter1='b':
        print(letter2=random.choice(['a','c','d','e','f','g','h'])
    else letter1='c':
        print(letter2=random.choice(['a','b','d','e','f','g','h'])

I want to determinate all 4 letters like this to avoid repeating. But I cant find why the program is not working now.

= is used to define whereas == is used to compare - change it
and also your print statement is wrong

import random
number=random.randrange(1500)+1
letter=random.choice(['a','b','c','d','e','f','g','h'])
dot='.'
for i in range(100):
    number=random.randrange(1500)+1
    letter1=random.choice(['a','b','c','d','e','f','g','h'])
    letter2=random.choice(['a','b','c','d','e','f','g','h'])
    letter3=random.choice(['a','b','c','d','e','f','g','h'])
    letter4=random.choice(['a','b','c','d','e','f','g','h'])
    if letter1=='a':
        print(number,letter2=random.choice(['b','c','d','e','f','g','h']),letter3,letter4)
    elif letter1=='b':
        print(number,letter2=random.choice(['a','c','d','e','f','g','h']),letter3,letter4)
    else letter1=='c':
        print(number,letter2=random.choice(['a','b','d','e','f','g','h']),letter3,letter4)

I think the command of letter 2 determination shouldnt be in the print command but I cant make the structure of it.

You can use random.sample() to avoid repetition.

letters = random.sample(['a','b','c','d','e','f','g','h'], 4)

This code will randomly select 4 values from the list of letters without any repeated values.

• You can't use

  else letter1 == "c":

  - else statements are written alone - so make it elif
  
• In lines 12, 14 and 16 your print statement is wrong- change it to

  letter2 = random.choice(['b','c','d','e','f','g','h'])
  print(number,letter2,letter3,letter4)

Almost got it! This command helped me a lot! I am wondering I didnt find it on the internet.

import random
number=random.sample(range(1500),1)
letters=random.sample(['a','b','c','d','e','f','g','h'],4)
for i in range(100):
    number=random.sample(range(1500),1)
    letters=random.sample(['a','b','c','d','e','f','g','h'],4)
    print(number,letters)

My program is almost done. Now the last problem. How to sort the numbers and letters? And I am not sure about my number command. I think it will still give me numbers with possible repetition.

Btw. the output is like this:

Output:
([82], ['g', 'h', 'e', 'a'])
([440], ['b', 'c', 'a', 'g'])
([1157], ['f', 'h', 'g', 'c'])
([465], ['g', 'h', 'c', 'a'])
([1349], ['g', 'f', 'b', 'c'])
([635], ['b', 'e', 'a', 'h'])
([148], ['g', 'e', 'h', 'a'])
([1456], ['d', 'b', 'h', 'c'])
([204], ['e', 'h', 'a', 'b'])
([1346], ['b', 'g', 'c', 'a'])
([703], ['g', 'a', 'f', 'd'])
([924], ['b', 'h', 'd', 'g'])
([1314], ['f', 'h', 'a', 'd'])
([887], ['c', 'a', 'b', 'h'])
([484], ['f', 'c', 'b', 'a'])
([1483], ['e', 'd', 'h', 'b'])

What is wrong?