import cannot find same folders' files

Question

import cannot find same file.Now,I have a,b,c files in folder A. File a　read b&c ones.First,I wrote in file a like

import b
import c
   ・
　 ・
　 ・   
x = b_method()
y = c_method()

But,error happens "No module named b".Next,I wrote in file a like

from A import b
from A import c
　　　・
    　・
    　・   
x = b_method()
y = c_method()

But,when I run this file,terminal said

ImportError: No module named 'A'

So,how can I read file b&c in file a? How can I fix this? I added

import os
import sys
file_dir = os.path.dirname(__file__)
sys.path.append(file_dir)

to file a,but it does not work.

My project structure is

test   (parent app)
｜--- A
      |
      ---- a
      ---- b
      ---- c

Traceback says

Traceback (most recent call last):
  File "a.py", line 10, in <module>
    from A import b
ImportError: No module named 'A'

When i wrote import b, Traceback says

Traceback (most recent call last):
  File "a.py", line 58, in <module>
    xxx = b.parse(user, id)
NameError: name 'b' is not defined

Whole a.py is

import sys
import os
import b
import c


LOG_FILENAME = 'excel.log'
file_dir = os.path.dirname(__file__)
sys.path.append(file_dir)

logger = logging.getLogger()
logger.setLevel(logging.DEBUG)

handler = logging.handlers.RotatingFileHandler(
    LOG_FILENAME, maxBytes=2000000, backupCount=5, encoding='utf-8')
handler.setFormatter(
    logging.Formatter('%(asctime)s %(levelname)s %(name)s %(message)s'))
handler.setLevel(logging.DEBUG)
logger.addHandler(handler)

console = logging.StreamHandler()
console.setLevel(logging.INFO)
logger.addHandler(console)

# READ
def read_config():
    f = codecs.open('config.json', 'r', 'utf-8')
    text = f.read()
    config = json.loads(text)
    return config

try:
    logger.debug('start.')
    logger.info("--------------------------------")
    logger.info("Excelファイル読込処理を開始します。")
    logger.info("--------------------------------")
    config = read_config()
    output_dir = config['output_dir']

    logger.info("クライアントのデータを読み込みます。")
    book_name = config['client']['file_name']
    regions = config['client']['regions']
    #clientsが空だと、jsonがoutputされない
    xxx = b.parse(user, id)
    yyy = c.parse(name,mail)
    logger.info("--------------------------------")

# ERROR
except:
    logger.exception('exception occurred.')
    print(input("error"))
    sys.exit(-1)

logger.debug('end.')
print(input("finish"))
sys.exit(0)

Can you please show your current directory structure? Also, are you sure that the script in which you are importing the modules is in the same directory as the modules? — Sam Chats, Aug 23 '17 at 05:38
You have a lot of problems, but to address them, please show us what your directory structure looks like. — cs95, Aug 23 '17 at 05:38
If you want help, we need more info. The biggest being, what is your project structure? — Christian Dean, Aug 23 '17 at 05:40
A is directory not a class or module while importing provide full path of file like import path — Pavan Kumar T S, Aug 23 '17 at 05:43
@user8504021 Also, for _both_ errors, please show the complete traceback, instead of just the error. — cs95, Aug 23 '17 at 05:47
@cᴏʟᴅsᴘᴇᴇᴅ i added my complete traceback.if u know something,please help me — user8504021, Aug 23 '17 at 05:54
Yes, the second problem is easily explained. But the `No module named b` is not. Please add that traceback too. — cs95, Aug 23 '17 at 05:56
@cᴏʟᴅsᴘᴇᴇᴅ i added my whole completely traceback — user8504021, Aug 23 '17 at 05:57
@cᴏʟᴅsᴘᴇᴇᴅ oh,i understand ur meanings,sorry.I added my traceback info. — user8504021, Aug 23 '17 at 06:06
@user8504021 Okay. this is _not_ an ImportError. It has to do with your code. Next, you should post the whole of your `a.py` code here, or the parts relevant to the traceback. — cs95, Aug 23 '17 at 06:09
first, define __init__.py in A module and then check answers in question where I explain about Python package and directory https://stackoverflow.com/questions/45768862/installing-modules-in-python-3 — Kallz, Aug 23 '17 at 06:33
@Kallz I added init.py into folder A,but same error happened when i wrote from A import b & import b.How can I do for next? — user8504021, Aug 23 '17 at 07:02

score 0 · Answer 1 · answered Aug 23 '17 at 05:46

Make sure of two things: -- The files you are trying to import are in the same folder/directory as the file you are working in -- The files are something you can use with python (a .py file is what you should be using)

After making sure of that try this on idle:

>>> import b
>>> import c
>>> c
>>> b

After doing that python should give you a message telling you about the specific modules

GAVD · Answer 2 · 2017-08-23T07:23:51.667

0

Making an empty file __init__.py in the directory and Python can identift directory from which you're allowed to import. Then you use

import b
import c

edited Aug 23 '17 at 07:23

answered Aug 23 '17 at 06:10

GAVD

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thx,ur comments.I added __init__.py into folder A,but same error happened when i wrote from A import b & import b.How can I do for next? – user8504021 Aug 23 '17 at 07:01

import cannot find same folders' files

2 Answers2