python-module

问题 I have a question which seems to be rather fundamental but I can't seem to find any help on this anywhere. file_a.py >> from xyz import XYZ class A: . . . file_b.py >> import file_a from file_a import A class B(A): def __init__(self): A.__init__(self) def someMethod(self): XYZ.doSomething() XYZ.doSomething() fails saying NameError: name 'XYZ' is not defined Even standard imports like 'import sys' done from file_a does not seem to render it usable in file_b. I assumed that should work. Is my

问题 I have a question which seems to be rather fundamental but I can't seem to find any help on this anywhere. file_a.py >> from xyz import XYZ class A: . . . file_b.py >> import file_a from file_a import A class B(A): def __init__(self): A.__init__(self) def someMethod(self): XYZ.doSomething() XYZ.doSomething() fails saying NameError: name 'XYZ' is not defined Even standard imports like 'import sys' done from file_a does not seem to render it usable in file_b. I assumed that should work. Is my

问题 I have trouble importing package. My file structure is like this: filelib/ __init__.py converters/ __init__.py cmp2locus.py modelmaker/ __init__.py command_file.py In module command_file.py I have a class named CommandFile which i want to call in the cmp2locus.py module. I have tried the following in cmp2locus.py module: import filelib.modelmaker.command_file import modelmaker.command_file from filelib.modelmaker.command_file import CommandFile All these options return ImportError: No modules

问题 To preface, I think I may have figured out how to get this code working (based on Changing module variables after import), but my question is really about why the following behavior occurs so I can understand what to not do in the future. I have three files. The first is mod1.py: # mod1.py import mod2 var1A = None def func1A(): global var1 var1 = 'A' mod2.func2() def func1B(): global var1 print var1 if __name__ == '__main__': func1A() Next I have mod2.py: # mod2.py import mod1 def func2():

问题 So I know that is a lot of code to look at down below, but I'm absolutely stumped because I've never had such an issue when using python. I was hopeful to use the requests module to help me speed up some of my web based activities for work. I downloaded the zipball per the requests of the developers and ran "setup.py" to install it into the "site-packages" directory. I've verified that all the content is indeed where it should be, and theoretically I should be able to import it and then use

问题 I have been googling this for the past hours and can't find an equivalent question anywhere. Also the documentation for 2.7 and 3.5 seem identical, so I don't think this behavior is documented. Here is my directory structure: project -- project.py -- api -- __init__.py -- subapi -- __init__.py contents of project/project.py : import api contents of project/api/__init__.py : import subapi If I execute python project.py (using python 2.7) from inside the projects folder, it returns without an

问题 I'm pulling my hair out over here trying to set up MySQLdb on my Mac in order to connect to a remote MySQL server. I have installed the latest C MySQL client libraries I have installed XCode 4 I did naively try to install the module before installing XCode or the client libraries I am attempting to set up the module by running the following commands in terminal: $ sudo python setup.py build $ sudo python setup.py install Both of these commands fail with similar error messages. Here is the

问题 Everywhere I see Python code importing modules using import sys or import mymodule How does the interpreter find the correct file if no directory or path is provided? 回答1: http://docs.python.org/3/tutorial/modules.html#the-module-search-path 6.1.2. The Module Search Path When a module named spam is imported, the interpreter first searches for a built-in module with that name. If not found, it then searches for a file named spam.py in a list of directories given by the variable sys.path . sys

问题 Consider the following case in Python 3.6: basepackage |---__init__.py |---package |---__init__.py |---subpackage |---__init__.py |---module.py Important detail : inside basepackage.package.__init__.py there's: from basepackage.package.subpackage.module import AClass as AliasedClass Now, let's say inside basepackage.package.subpackage.module.py we want to use: import basepackage.package.subpackage.module as aliased_module [1] The result is: AttributeError: module 'basepackage' has no

问题 Python isn't importing modules! marketing ├───__init__.py ├───analyzation\ │ ├───__init__.py │ ├───analyzer.py ├───api\ ├───test\ │ ├───test_res\ (not important) │ ├───__init__.py │ ├───test_analyzer.py Above is my folder structure. So, in analyzer.py I have a class DataSet and nothing else other than some imports from pandas and an import in a method import random . In test_analyzer.py I have a class that subclasses unittest.TestCase . This script tries to test the following class being