Need to write contents of file to a .txt

[Deathwing]

Hello,

I'm fairly new to python and have only been playing around with it for one week actually. It's my first attempt at programming and I'm trying to generate some random floats and then have the results of this random generation be filled into a .txt file. So far I have only been able to generate random intergers and create a blank .txt. Can anyone help ? How do I get my ints to turn to floats I have tried using the "float" datatype infront of my numbers but that does not work. Also, how after having generated the random numbers do I get them to populate the .txt file that is created.

Thanks so very much

Here is my code thus far:

# Random number generator
# This script generates random numbers
# The script then writes the result to a text file


text_file = open("points.txt", "w")
#text_file.write(i)

import random

for numbers in range( 1, 201 ):
print "%5d" % ( random.randrange( 1, 201 ) ),

if numbers % 6 == 0:
print


#text_file.writelines(numbers)

text_file.close()

raw_input("\n\nPress the enter key to exit.")

[bvdet]

Hello,

I'm fairly new to python and have only been playing around with it for one week actually. It's my first attempt at programming and I'm trying to generate some random floats and then have the results of this random generation be filled into a .txt file. So far I have only been able to generate random intergers and create a blank .txt. Can anyone help ? How do I get my ints to turn to floats I have tried using the "float" datatype infront of my numbers but that does not work. Also, how after having generated the random numbers do I get them to populate the .txt file that is created.

Thanks so very much

Here is my code thus far:

# Random number generator
# This script generates random numbers
# The script then writes the result to a text file


text_file = open("points.txt", "w")
#text_file.write(i)

import random

for numbers in range( 1, 201 ):
print "%5d" % ( random.randrange( 1, 201 ) ),

if numbers % 6 == 0:
print


#text_file.writelines(numbers)

text_file.close()

raw_input("\n\nPress the enter key to exit.")

Maybe you can modify this to meet your requirements:

import random
 
# generate 20 random numbers and write to a text file
 
f = open(r'path\dir\file_name', 'w')
for i in range(20):
    f.write('%.8f\n' % (random.random()))
 
f.close()
 
'''
0.49790300
0.22560614
0.94740230
0.76629025
0.54590250
0.01583565
0.87463924
0.39809160
0.06935606
0.69546613
0.79916955
0.53687077
0.56587108
0.78859956
0.91774516
0.63878437
0.38448525
0.60584063
0.30951708
0.56703802
'''

Please use code tags in your posts. See reply guidelines. HTH :)

[bvdet]

Here is another way:

import random
 
f = open(r'path\dir\file_name', 'w')
f.writelines(['%.8f\n' % (random.random()) for _ in range(20)])
f.close()

[Deathwing]

Thanks bvdet, I'll take a look at it I hope I can modify it, it looks very interesting you have taught me something new todya great! :"D.

Sincerely,

Deathiwng

[ghostdog74]

eg

python -c "import random; print '\n'.join([str(random.randint(1,201)) for i in range(20)])" > file      
 

[Deathwing]

eg

python -c "import random; print '\n'.join([str(random.randint(1,201)) for i in range(20)])" > file      
 

could you explain? I'm sorry I don't understand

[Deathwing]

Here is another way:

import random
 
f = open(r'path\dir\file_name', 'w')
f.writelines(['%.8f\n' % (random.random()) for _ in range(20)])
f.close()

Hey bvdet thanks for the tip I have managed to adjust it somewhat but I need to figure out how to get the output/data in to x and y columns here is my modified code. Hope you can help.

# Random number generator
# This script generates random numbers
# The script then writes the result to a text file
# Guillermo Paniagua - 03/27/07
import random
 
 
 
f = open(r"grapes.txt", "w")
#text_file.write(i)
 
 
 
for i in range( 1, 601 ):
 
 
   f.write( "%5f\n" % ( random.randrange( 1, 601 ) )),
 
  #if numbers % 6 == 0:  
     #print
 
 
#text_file.writelines(numbers)
 
f.close()
 
raw_input("\n\nPress the enter key to exit.")

[bvdet]

Hey bvdet thanks for the tip I have managed to adjust it somewhat but I need to figure out how to get the output/data in to x and y columns here is my modified code. Hope you can help.

# Random number generator
# This script generates random numbers
# The script then writes the result to a text file
# Guillermo Paniagua - 03/27/07
import random
 
 
 
f = open(r"grapes.txt", "w")
#text_file.write(i)
 
 
 
for i in range( 1, 601 ):
 
 
   f.write( "%5f\n" % ( random.randrange( 1, 601 ) )),
 
  #if numbers % 6 == 0:  
     #print
 
 
#text_file.writelines(numbers)
 
f.close()
 
raw_input("\n\nPress the enter key to exit.")

What do you mean by "get the output/data in to x and y columns"?. Instead of each number on a separate line, do you want the numbers in pairs?

[Deathwing]

What do you mean by "get the output/data in to x and y columns"?. Instead of each number on a separate line, do you want the numbers in pairs?

hi there and yep an x and y column you are correct I do want numbers in pairs. :)

[bartonc]

Please read "REPLY GUIDELINES" so that you know how to use CODE tags.
Then start using them. It's a real pain for others to try and see the structure of your code without them.

Thank you very much.

[Deathwing]

hi there and yep an x and y column you are correct I do want numbers in pairs. :)

it would also be good if the random floating point numbers where more than just always 12.00 , instead it would be nice to see 12.31,12.00, 14.56 etc... Do I have to change the datatype from float to decimal or something ? or use some type of math module ?

[bvdet]

it would also be good if the random floating point numbers where more than just always 12.00 , instead it would be nice to see 12.31,12.00, 14.56 etc... Do I have to change the datatype from float to decimal or something ? or use some type of math module ?

Something like this?

import random
 
f = open(r'path\dir\file_name', 'w')
f.writelines(['%12.8f %14.8f\n' % (random.random()*random.randint(1,600), random.random()*random.randint(1,600)) for _ in range(20)])
f.close()
'''
178.09115903   133.36811062
 60.54302702    93.40949828
245.20980645   254.00913526
350.37618749    49.87972752
276.50622882   248.12002096
234.91464718     3.01132671
  0.10043225   379.17639623
 21.99813057   213.64247640
  5.09396543     2.42861560
101.41723993    32.51914585
 29.31167588   430.25596881
 48.70798269    90.25232557
 33.68899482   153.09551692
107.74691175   108.88171789
  2.27747461    13.77821158
125.42570521    53.47742587
 90.04062953    38.57455190
171.75925277   234.66057796
  2.05780089   234.13322485
303.65883903    20.71402190
'''

[Deathwing]

Yes that is right something like this... thanks so very much I think this will help alot. I will take a look at it and try to adapt it to see if it works. By the way Python is my new hobby I thought it would be cool to learn to program and thought I'd either learn using Python or IDL. So thanks alot looking over your suggestions has really helped me out :)

[bvdet]

Yes that is right something like this... thanks so very much I think this will help alot. I will take a look at it and try to adapt it to see if it works. By the way Python is my new hobby I thought it would be cool to learn to program and thought I'd either learn using Python or IDL. So thanks alot looking over your suggestions has really helped me out :)

You are welcome. We are glad to help and appreciate the positive feedback. :)