Unable to import module from another folder - python

my file directory is as follows
mein_paket
--src
----__init__.py
----script.py
--tests
----test.py
In my tests/test.py file, I have the following code:
from mein_paket.src.script import Cat
c = Cat('aicri')
c.meow()
However I get the error ModuleNotFoundError: No module named 'mein_paket'
I have tried different importing methods such as
from mein_paket.src.script import Cat
from mein_paket.src import Cat
from src.script import Cat
from src import Cat
But none seem to work, I'm also trying to avoid the use of sys.append.

Related

Python: ModuleNotFoundError: No module named ''

I am running python code in docker.
I have the following file structure:
-my_dir
-test.py
-bird.py
-string_int_label_map_pb2.py
-inference.py
inference.py:
import test
import bird
from string_int_label_map_pb2 import StringIntLabelMap
test.py and bird.py both contain this code:
print('hello world!')
def this_is_test():
return 'hi'
In inference.py 'import test' throws no error(but 'hello world!' is never printed).
'import bird' throws: ModuleNotFoundError: No module named 'bird'. Finally
'import string_int_label_map_pb2 ' throws: ModuleNotFoundError: No module named 'string_int_label_map_pb2 '
Note: bird.py and test.py are not simultaneously existing in the dir, they are depticted as such only to make my point. They exist only when I rename the same file to either name to test if the name itself was to blame.
If one or the other is not in the folder but you still have import test and import bird in the inference.py, that's your issue. Python is trying to import both files but can not find the file.
I added bird.py to /worker/ (the WORKDIR path configured in the dockerfile) and sure enough "Hello world!" printed.
So the issue was that inference.py was not searching its parent dir for imports as I thought, but rather the path configured in WORKDIR.
Still don't understand why import test gave no errors since there was never a test.py file in /worker/.
I also had this problem, how did I solve the problem?
For example.
My directory:
--Application
---hooks
----init.py
----helpers.py
---model
----init.py
----model_person.py
In script model_person.py
import sys
sys.path.append('../')
from hooks.helpers import *
Thats all

Python Paths - ImportError: cannot import name 'dataset_builder'

I am getting an error ImportError: cannot import name 'dataset_builder'. The import command is following:
from object_detection.builders import dataset_builder
The file tree looks following:
-ObjectDetection
-train.py
-models
-research
-object_detection
-builders
- __init__.py
-dataset_builder.py
I am running the train.py from the root directory (os.getcwd() returns following path C:\Users\horakm\PyCharmProjects\ObjectDetection) and I added in the train.py following code to add paths:
sys.path.append(r'C:\Users\horakm\PyCharmProjects\ObjectDetection\models')
sys.path.append(r'C:\Users\horakm\PyCharmProjects\ObjectDetection\models\research')
sys.path.append(r'C:\Users\horakm\PyCharmProjects\ObjectDetection\models\research\slim')
When I print all paths using sys.path i get this:
['C:\\Users\\horakm\\PyCharmProjects\\ObjectDetection',
'C:\\Users\\horakm\\PyCharmProjects\\ObjectDetection',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env\\python36.zip',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env\\DLLs',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env\\lib',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env',
'C:\\Users\\horakm\\AppData\\Roaming\\Python\\Python36\\site-packages',
'C:\\Users\\horakm\\AppData\\Roaming\\Python\\Python36\\site-packages\\win32',
'C:\\Users\\horakm\\AppData\\Roaming\\Python\\Python36\\site-packages\\win32\\lib',
'C:\\Users\\horakm\\AppData\\Roaming\\Python\\Python36\\site-packages\\Pythonwin',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env\\lib\\site-packages',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env\\lib\\site-
packages\\object_detection-0.1-py3.6.egg',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env\\lib\\site-packages\\win32',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env\\lib\\site-
packages\\win32\\lib',
'C:\\Users\\horakm\\AppData\\Local\\Continuum\\miniconda3\\envs\\tf1_env\\lib\\site-packages\\Pythonwin',
'C:\\Users\\horakm\\PyCharmProjects\\ObjectDetection\\models',
'C:\\Users\\horakm\\PyCharmProjects\\ObjectDetection\\models\\research',
'C:\\Users\\horakm\\PyCharmProjects\\ObjectDetection\\models\\research\\slim']
How is it possible that the import statement doesn't work?
Which object are you actually trying to import?
All that are defined in dataset_builder? In that case it should be from object_detection.builders.dataset_builder import *.
Or is the object also called dataset_builder? In that case it is from object_detection.builders.dataset_builder import dataset_builder.

ImportError: cannot import name filename

I have a directory structure like this which houses django MVP files - b and c are individual apps on the main website:
a/b/models.py
a/c/models.py
In c/models.py, I can do "from b.models import "ClassName"", but when I do "from c.models import "Class2Name"" in b.models.py, I get the error:
ImportError: cannot import name "Class2Name"
I see this might be a circular dependency issue, but I'm not clear if it is.

Python : Cannot find any functions within my own module?

I have created my own module with filename mymodule.py. The file contains:
def testmod():
print "test module success"
I have placed this file within /Library/Python/2.7/site-packages/mymodule/mymodule.py
I have also added a __init__.py file, these have compiled to generate
__init__.pyc and mymodule.pyc
Then in the python console I import it
import mymodule
which works fine
when I try to use mymodule.testmod() I get the following error:
AttributeError: 'module' object has no attribute 'testmod'
So yeah it seems like it has no functions?
You have a package mymodule, containing a module mymodule. The function is part of the module, not the package.
Import the module:
import mymodule.mymodule
and reference the function on that:
mymodule.mymodule.testmod()
You can use from ... import and import ... as to influence what gets imported exactly:
from mymodule import mymodule
mymodule.testmod()
or
from mymodule import mymodule as nestedmodule
nestedmodule.testmod
or
from mymodule.mymodule import testmod
testmod()
etc.

Import a module from a package

I'm trying to import a simple package, but it doesn't work.
I have a "package" directory that contains two files:
foo.py (with a function called fct)
__init__.py (with nothing in it)
Here is the content of tests.py:
import package.foo
foo.fct(7)
But it doesn't work.
If I change the import line to from package.foo import fct, I can execute the function.
You need import package.foo as foo or one of the alternatives below ...
import package.foo
package.foo.fct(7)
or:
import package.foo as foo
foo.fct(7)
or possibly:
from package import foo
foo.fct(7)

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