How to make a random text python

Question

I need help to output a random text. I've been given a text with 25k words, from this text_file I've been calculating the probability for the single letters, and the single words to see which letters/words have been used most.

Now I need to make a other text with 500 letters, but this text should include the probability that I have calculated, and should be wroten by the letters that I "found" from the first text.

It's like: Text1 -> do probability over the usen letters, which letters have been represented most. Make text2 -> use the probability u found from text1.

Hope u can help me, Im new in Python.

Answer 1

The easiest thing is to randomly select letters of the 25k file. Then the resultant has the same probability as the original.

import random
print(''.join(random.choice(original_text) for _ in range(500)))

Answer 2

You could do something like this:

import string
import random

def get_random_letter():
    # depends how you want to randomize getting your letter
    return random.choice(string.letters)

random_letters = []
for i in range(500):
    random_letter = get_random_letter()
    random_letters.append(random_letter)

with open("text.txt", 'w') as f:
    f.write("".join(random_letters))

You would change the "get_random_letter" definition depending on your probability model and return that character (in that case, you do not need to import random or string, these are just used for example).

Edit: To get the letter based on a certain weight you could use this:

import random

inputs = ['e', 'f', 'g', 'h']
weights = [10, 30, 50, 10]

def get_random_letter(inputs, weights):
    r = random.uniform(0, sum(weights))
    current_cutoff = 0
    for index in range(len(weights)):
        current_cutoff = current_cutoff + weights[index]
        if r < current_cutoff:
            return inputs[index]

print get_random_letter(inputs, weights)

which is derived from the post here: Returning a value at random based on a probability weights

Answer 3

I've now this:

def random_text():
   return(''.join(random.choice(text) for _ in range(500)))

random_letters = []

for i in range(1):
random_letter = random_text()
random_letters.append(random_letter)

print random_letters

Now it only runs once. But I don't know how to make the output text onto encoding utf-8?