Python导入多个脚本

Question

I've been working on a python script that will require multiple libraries to be imported.

At the moment my directory structure is

program/
    main.py
    libs/
        __init__.py
        dbconnect.py
        library01.py
        library02.py
        library03.py

My dbconnect.py which has the following contents

import psycopg2

class dbconnect:

    def __init__(self):
        self.var_parameters = "host='localhost' dbname='devdb' user='temp' password='temp'"

    def pgsql(self):
        try:
            var_pgsqlConn = psycopg2.connect(self.var_parameters)
        except:
            print("connection failed")

    return var_pgsqlConn

I am able to import and use this in my main.py using

from libs.dbconnect import dbconnect

class_dbconnect = dbconnect()
var_pgsqlConn = class_dbconnect.pgsql()

This works as expected however I am trying to import all of the library scripts each which have similar contents to bellow

def library01():
    print("empty for now but this is library 01")

I have added to my __init__.py script

__all__ = ["library01", "library02"]

Then in my main.py I tried to import and use them as bellow

from libs import *

library01()

I am getting the following error

TypeError: 'module' object is not callable

Answer 1

I'll suppose content in your library0x.py are different (the functions/class have different names)

The best way is to import all your subfiles content in the __init__.py

# __init__.py
from .dbconnect import *
from .library01 import *
from .library02 import *
from .library03 import *

Then you can use the following :

from libs import library01, library02

If you want to restrict for some reasons importation with the wildcard ( * ) in your library0x.py files, you can define a __all__ variable containing all the names of the function you will import with the wildcard :

# library01.py

__all__ = ["library01"]

def a_local_function():
    print "Local !"

def library01():
    print "My library function"

Then, by doing from .library01 import * , only the function library01 will be import.

---

EDIT: Maybe i missunderstand the question : here are some ways to import the function library01 in the file library01.py :

# Example 1:
from libs.library01 import library01
library01()

# Example 2:
import libs.library01
libs.library01.library01()

# Example 3:
import libs.library01 as library01
library01.library01()

Answer 2

In your case library01 is a module which contains a function named library01 . You import the library01 module and try to call it as a function. That's the problem. You should call the function like this:

library01.library01()