I have been searching online, but have not found any solution.
Here is my text file:
I want x cookies
He wants y cookies
I want the python script to export the value in x and y from the user input.
Here is the script:
xcookies = input("How much cookies do you want?")
ycookies = input("How much cookies does he want?")
I found some scripts online but I can never keep the text from the original text file and export variables in this text file.
Could anyone please help me with that?
This will append your variables to the end of MyFile.txt, a txt file in the same directory as the python script.
# Open the text file
txt_file = open("MyFile.txt","a")
# Append new line
txt_file.write('\n')
# Append your variables
txt_file.write(xcookies + '\n')
txt_file.write(ycookies + '\n')
# Close file
txt_file.close()
It is unclear what you want to reach in your script.
Please make your question more concrete.
Anyway, you can use this as a guideline:
In order to read a text file and write to a text file, you can do the following:
with open("path/to/file.txt", "r") as f:
data = f.read()
Using that you are able to read to the content of the file and then parse it
(using data.split() or whatever you need).
After getting the desired input from the user,
you are able to write the content back to the file by doing the following:
with open("path/to/file.txt", "w") as f:
f.write(content)
Please refer to those tutorials:
The Python Tutorial - Input and Output
Python for Beginners - Reading and Writing Files in Python
Related
and thank you for taking the time to read this post. This is literally my first time trying to use Python so bare with me.
My Target／Goal: Edit the original text file (Original .txt file) so that for every domain listed an "OR" is added in between them (below target formatting image). Any help is greatly appreciated.
I have been able to google the information to open and read the txt file, however, I am not sure how to do the formatting part.
Script
Original .txt file
Target formatting
You can achieve this in a couple lines as:
with open(my_file) as fd:
result = fd.read().replace("\n", " OR ")
You could then write this to another file with:
with open(formatted_file, "w") as fd:
fd.write(result)
something you could do is the following
import re
# This opens the file in read mode
with open('Original.txt', 'r') as file:
# Read the contents of the file
contents = file.read()
# Seems that your original file has line breaks to each domain so
# you could replace it with the word "OR" using a regular expression
contents = re.sub(r'\n+', ' OR ', contents)
# Then you should open the file in write mode
with open('Original.txt', 'w') as file:
# and finally write the modified contents to the file
file.write(contents)
a suggestion is, maybe you want to try first writing in a different file to see if you are happy with the results (or do a copy of Original.txt just in case)
with open('AnotherOriginal.txt', 'w') as file:
file.write(contents)
I'm trying to create a webscraping script in Python where I follow a bunch of links and insert them into a .txt file. However, I want to do this only if the website already doesn't exist in the file.
I have written this code to insert the given website link into the file, so far (not working):
def writeSite(site):
file = open("websites.txt", 'a+')
# print(site)
if site in file.read():
return
file.write(site + "\n")
file.close()
Thanks in advance.
You were pretty close, but because you open the file to append to it, it starts with the file pointer at the end. You need to seek to the start to read its contents again:
def writeSite(site):
file = open("websites.txt", 'a+')
file.seek(0)
# print(site)
if site in file.read():
return
file.write(site + "\n")
file.close()
However, keep in mind that site in file.read() is very crude.
For example, imagine you already have 'http://somesite.com/page/' in the file but now you want to add 'http://somesite.com/' - the URL as a whole is not in the file, but your test will find it.
If you want to check whole lines (and be sure you deal with the file nicely), this would be better:
def writeSite(site):
site += '\n'
with open("websites.txt", 'a+') as f:
f.seek(0)
if site in f.readlines():
return
f.write(site)
It adds a newline to the name of the site to separate the URLs in the file and uses readlines to make use of that fact to check for the whole URL. Using with ensures the file always gets closed.
And since you want to read before writing anyway, you could use 'r+' as a mode, and skip the seek - but only if you can be sure the file already exists. I assume you chose 'a+' because that isn't the case.
(in case you worry that this changes the value of site - that's only true for the parameter inside the function. Whatever value you passed in outside the function will remain unaffected)
I've tried using python's mailmerge library on MS Word fields, but I lose all the formatting on the text. I'm wondering if there's a way to replicate going in Word and using 'Insert>Object>Text from file' using a python library (or really anything at this point). If there's an easy way to do this by editing the oxml even that would work. I just need some idea of where to start looking, or if I need to program this by hand.
I tried to come up with something to start with, hope it is useful. In the code below, I do open the file or create one if it does not exist, write some lines of data. Read the same lines of data in file1 then write them in a freshly created file2.
#Read and write files using the built-in Python methods
def main():
#open the file for writing and create if it does not exist
file = open("file1.txt", "w+")
#write some lines of data to the file
for i in range(5):
file.write("This is Andela %d\r\n" % (i + 1))
file.close()
#write text in file1.txt to another file called file2
open("file2.txt", "w").writelines([l for l in open("file1.txt").readlines() if "Andela" in l])
main()
I'm very new to programming (obviously) and really advanced computer stuff in general. I've only have basic computer knowledge, so I decided I wanted to learn more. Thus I'm teaching myself (through videos and ebooks) how to program.
Anyways, I'm working on a piece of code that will open a file, print out the contents on the screen, ask you if you want to edit/delete/etc the contents, do it, and then re-print out the results and ask you for confirmation to save.
I'm stuck at the printing the contents of the file. I don't know what command to use to do this. I've tried typing in several commands previously but here is the latest I've tried and no the code isn't complete:
from sys import argv
script, filename = argv
print "Who are you?"
name = raw_input()
print "What file are you looking for today?"
file = raw_input()
print (file)
print "Ok then, here's the file you wanted."
print "Would you like to delete the contents? Yes or No?"
I'm trying to write these practice codes to include as much as I've learned thus far. Also I'm working on Ubuntu 13.04 and Python 2.7.4 if that makes any difference. Thanks for any help thus far :)
Opening a file in python for reading is easy:
f = open('example.txt', 'r')
To get everything in the file, just use read()
file_contents = f.read()
And to print the contents, just do:
print (file_contents)
Don't forget to close the file when you're done.
f.close()
Just do this:
>>> with open("path/to/file") as f: # The with keyword automatically closes the file when you are done
... print f.read()
This will print the file in the terminal.
with open("filename.txt", "w+") as file:
for line in file:
print line
This with statement automatically opens and closes it for you and you can iterate over the lines of the file with a simple for loop
How to read and print the content of a txt file
Assume you got a file called file.txt that you want to read in a program and the content is this:
this is the content of the file
with open you can read it and
then with a loop you can print it
on the screen. Using enconding='utf-8'
you avoid some strange convertions of
caracters. With strip(), you avoid printing
an empty line between each (not empty) line
You can read this content: write the following script in notepad:
with open("file.txt", "r", encoding="utf-8") as file:
for line in file:
print(line.strip())
save it as readfile.py for example, in the same folder of the txt file.
Then you run it (shift + right click of the mouse and select the prompt from the contextual menu) writing in the prompt:
C:\examples> python readfile.py
You should get this. Play attention to the word, they have to be written just as you see them and to the indentation. It is important in python. Use always the same indentation in each file (4 spaces are good).
output
this is the content of the file
with open you can read it and
then with a loop you can print it
on the screen. Using enconding='utf-8'
you avoid some strange convertions of
caracters. With strip(), you avoid printing
an empty line between each (not empty) line
to input a file:
fin = open(filename) #filename should be a string type: e.g filename = 'file.txt'
to output this file you can do:
for element in fin:
print element
if the elements are a string you'd better add this before print:
element = element.strip()
strip() remove notations like this: /n
print ''.join(file('example.txt'))
This will give you the contents of a file separated, line-by-line in a list:
with open('xyz.txt') as f_obj:
f_obj.readlines()
It's pretty simple
#Opening file
f= open('sample.txt')
#reading everything in file
r=f.read()
#reading at particular index
r=f.read(1)
#print
print(r)
Presenting snapshot from my visual studio IDE.
single line to read/print contents of a file
reading file : example.txt
print(open('example.txt', 'r').read())
output:
u r reading the contents of example.txt file
Reading and printing the content of a text file (.txt) in Python3
Consider this as the content of text file with the name world.txt:
Hello World! This is an example of Content of the Text file we are about to read and print
using python!
First we will open this file by doing this:
file= open("world.txt", 'r')
Now we will get the content of file in a variable using .read() like this:
content_of_file= file.read()
Finally we will just print the content_of_file variable using print command.
print(content_of_file)
Output:
Hello World! This is an example of Content of the Text file we are about to read and print
using python!
I'm getting a bit of a trouble here. I have a text file with ["Data1", "Data2", "Data3"], and I want to make that if data1 is not in the file, then append a new list with all three strings, and if data is already there, then just print it. What is broken in this code and why?
filename = "datosdeusuario.txt"
leyendo = open(filename, 'r')
if user.name in leyendo:
Print("Your user name is already there")
else:
file = open(filename, 'a')
file.write(json.dumps([user.name, "data2", "data3"])+"\n")
file.close()
Print("Since I couldn't find it, I did append your name and data.")
P.S.: I am a rookie in Python, and I'm getting confused often. That's why I am not using any dicts (no idea what they are anyway), so I'd like to make that code work in the most simple way.
P.S.2: Also, if that works, my next step would be to make a search engine to return one specific of the three data items in the list. For example, if I want to get the data2 in a list with username "sael", what would I need to do?
It seems that you're reading from the file pointer, NOT from the data in the file as you expected.
So, you first need to read the data in the file:
buffer = leyendo.read()
Then do your check based on buffer, not leyendo:
if user.name in buffer:
Also, you're opening the file two times, that may be kind of expensive. I am not sure if Python got a feature to open the file in both read and write modes.
Assuming that your user.name and your Print functions are working, you need to read the file and close the file.
Try this:
filename = "datosdeusuario.txt"
f = open(filename, 'r')
leyendo = f.read()
f.close()
if user.name in leyendo:
Print("Your user name is already there")
else:
file = open(filename, 'a')
file.write(json.dumps([user.name, "data2", "data3"])+"\n")
file.close()
Print("Since I couldn't find it, I did append your name and data.")
First, you should close the file in both cases, and I think you should close the file before re-opening it for appending.
I think the problem is with the line:
if user.name in leyendo:
which will always return false.
You should read the file and then question it like so:
if user.name in leyendo.read():