I'm trying to build a file transfer system with python3 sockets. I have the connection and sending down but my issue right now is that the file being sent has to be in the same directory as the program, and when you receive the file, it just puts the file into the same directory as the program. How can I get a user to input the location of the file to be sent and select the location of the file to be sent to?
I assume you're opening files with:
open("filename","r")
If you do not provide an absolute path, the open function will always default to a relative path. So, if I wanted to open a file such as /mnt/storage/dnd/5th_edition.txt, I would have to use:
open("/mnt/storage/dnd/4p5_edition","r")
And if I wanted to copy this file to /mnt/storage/trash/ I would have to use the absolute path as well:
open("/mnt/storage/trash/4p5_edition","w")
If instead, I decided to use this:
open("mnt/storage/trash/4p5_edition","w")
Then I would get an IOError if there wasn't a directory named mnt with the directories storage/trash in my present folder. If those folders did exist in my present folder, then it would end up in /whatever/the/path/is/to/my/current/directory/mnt/storage/trash/4p5_edition, rather than /mnt/storage/trash/4p5_edition.
since you said that the file will be placed in the same path where the program is, the following code might work
import os
filename = "name.txt"
f = open(os.path.join(os.path.dirname(__file__),filename))
Its pretty simple just get the path from user
subpath = raw_input("File path = ")
print subpath
file=open(subpath+str(file_name),'w+')
file.write(content)
file.close()
I think thats all you need let me know if you need something else.
like you say, the file should be in the same folder of the project so you have to replace it, or to define a function that return the right file path into your open() function, It's a way that you can use to reduce the time of searching a solution to your problem brother.
It should be something like :
import os
filename = "the_full_path_of_the_fil/name.txt"
f = open(os.path.join(os.path.dirname(__file__),filename))
then you can use the value of the f variable as a path to the directory of where the file is in.
Related
I am trying to import a csv file as a dataframe into a Jupyter notebook.
rest_relation = pd.read_csv('store_id_relation.csv', delimiter=',')
But I get this error
FileNotFoundError: [Errno 2] No such file or directory: 'store_id_relation.csv'
The store_id_relation.csv is definitely in the data folder, and I have tried adding data\ to the file location but I get the same error. Whats going wrong here?
Using the filename only works if the file is located in the current working directory. You can check the current working directory using os.getcwd().
import os
current_directory = os.getcwd()
print(current_directory)
One way you can make your code work is to change the working directory to the one where the file is located.
os.chdir("Path to wherever your file is located")
Or you can substitute the filename with the full path to the file. The full path would look something like C:\Users\Documents\store_id_relation.csv.
Always try to pass the full path whenever possible
By default, read_csv looks for the file in the current working directory
Provide the full path to the read_csv function
However in your case , data and Data are different , and file paths are case sensitive
You can try the below path to fetch the file and convert it into a dataframe
rest_relation = pd.read_csv('Data\\store_id_relation.csv', delimiter=',')
In case where you don't want to change your read_csv()'s parameter, just make sure you are in a correct path of directory which your .csv file is in. Otherwise you can change your directory into there and then run the python file or simply change read_csv()'s parameter.
Data visualisation: I want to import a file using pandas. I assigned a variable and file name given is correct but it shows a error message as file does not exist
Code: sample_data = pd.read_csv('sample_data.csv')
You're probably in the wrong working directory. Run os.getcwd() to check. If so, you can either change working directories with os.chdir() or give an absolute path to the file instead of a relative path.
If you're already in the right working directory, run os.listdir() to make sure the file is actually there.
Ok, in this case, what you will have to do is get the path file by right-clicking on the file and going to properties(Windows, don't know about Mac). Then just copy the file path and paste it instead of the file name. So for now, it should be something like this(as I don't know your file path):
sample_data = pd.read_csv('C:\Users\SVISHWANATH\Downloads\datasets')
Now, after the last folder, give in your file name. So now, it should look like this:
sample_data = pd.read_csv('C:\Users\SVISHWANATH\Downloads\datasets\sample_data.csv')
However, this will still not work as the slashes need to be the other way. Because of this, there will have to be an r before the quotes.
sample_data = pd.read_csv(r'C:\Users\SVISHWANATH\Downloads\datasets\sample_data.csv')
Now this should work as all the requirements are met.
You need to store the .csv file in a folder where the actual program is stored, otherwise you have to give a proper path to the file:
sample_data = pd.read_csv('filepath')
Let's say I have a file called credentials.json in my current directory, an environment variable MY_CREDENTIALS=credentials.json and a script main.py that uses this environment variable via os.getenv('MY_CREDENTIALS').
Now suppose I create a subfolder and put something there like this: /subfolder/my_other_script.py.
If I print os.getenv('MY_CREDENTIALS') then I get indeed credentials.json but I can't use this file as it is in my root directory (not in /subfolder). So, how can I use this file although it is in the root directory? The only thing that works for me is to make a copy of credentials.json in /subfolder, but then I would have multiple copies of this file and I don't want that.
Thanks for your response!
Something like this could work:
from pathlib import Path
import os
FILENAME = os.getenv('MY_CREDENTIALS')
filePath = Path(FILENAME)
if filePath.exists() and filePath.is_file():
print("Success: File exists")
print(filePath.read_text())
else:
print("Error: File does not exist. Getting file from level below.")
print((filePath.absolute().parent.parent / filePath.name).read_text())
Basically, you check whether your file exists in the current folder. This will be the case, if your script is in your root folder. If it is not, you assume that you are in a subfolder. So you try to get the file from one level below (your root).
It's not totally production ready, but for the specific case you mentioned it should work. In production you should think about cases where you might have nested subfolder or your file is missing for good.
You can create symbolic link
os.symlink('<root>', '<subfolder>')
https://docs.python.org/3/library/os.html#os.symlink
I have created a small python script. With that I am trying to read a txt file but my access is denied resolving to an no.13 error, here is my code:
import time
import os
destPath = 'C:\Users\PC\Desktop\New folder(13)'
for root, dirs, files in os.walk(destPath):
f=open(destPath, 'r')
.....
Based on the name, I'm guessing that destPath is a directory, not a file. You can do a os.walk or a os.listdir on the directory, but you can't open it for reading. You can only call open on a file.
Maybe you meant to call open on one or more of the items from files
1:
I take it you are trying to access a file to get what's inside but don't want to use a direct path and instead want a variable to denote the path. This is why you did the destPath I'm assuming.
From what I've experienced the issue is that you are skipping a simple step. What you have to do is INPUT the location then use os.CHDIR to go to that location. and finally you can use your 'open()'.
From there you can either use open('[direct path]','r') or destPath2 = 'something' then open(destPath2, 'r').
To summarize: You want to get the path then NAVIGATE to the path, then get the 'filename' (can be done sooner or not at all if using a direct path for this), then open the file.
2: You can also try adding an "r" in front of your path. r'[path]' for the raw line in case python is using the "\" for something else.
3: Try deleting the "c:/" and switching the / to \ or vice versa.
That's all I got, hope one of them helps! :-)
I got this issue when trying to create a file in the path -C:/Users/anshu/Documents/Python_files/Test_files . I discovered python couldn't really access the directory that was under the user's name.
So, I tried creating the file under the directory - C:/Users/anshu/Desktop .
I was able to create files in this directory through python without any issue.
With the code open, I can create a new file in the computer. How do i decide which folder it goes? I need to put them in a certain folder when i am creating them. Should I put sth in the brackets?
e.g. open("apple juice. txt", "a")
If you don't specify a path, then the file will be created in the current directory. Where exactly that is depends on how you started the interpreter. For example, when you start Python 3.4 from the Windows Start Menu, then the file will be saved in C:\Python34\.
If you want to specify a certain path, then do so:
f = open(r"C:\Users\David\Python Files\apple juice.txt", "a")
Give the full path:
with open("path_where/to_save/apple_juice.txt", "a") as f:
# do work
with will automatically close your file.
If you are looking for a place for temp files, use the module tempfile.
You can use the function tempfile.gettempdir() to get a path to a folder directory.
You can use tempfile.TemporaryFile() to generate a full path to the place where the temp files are usually stored on your OS.
The method used in either case to generate the temp path is explained here.