Doubts on openpyxl, python3

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He guys, I am just a beginner in Python3. I have a question :

import openpyxl
from openpyxl.style import * 

As you can see that I am importing the openpyxl module, but why I need to import the second one in order to style fonts and cells an on.

openpyxl is a package. It contains modules, such as style. You should import the package anyway (all package or individual items). You can either:

import openpyxl
from openpyxl.style import *

then use style items like item1, item2 or

from openpyxl import style

then use style items like style.item1, style.item2

Performance — openpyxl 3.0.4 documentation, Where in doubt, we have focused on functionality over optimisation: Versions: python: 3.6.9 openpyxl: 3.0.1 xlsxwriter: 1.2.5 Dimensions: Rows = 1000 Cols� Find Hand Tailored Articles on Reference: Where To Learn Python. Need Answers now? Find the Best Articles on Reference.com!

You don't have to - you can just as easily do:

import openpyxl
openpyxl.styles.fonts()

Or:

from openpyxl import style
style.fonts()

It comes down to personal preference. Using * imports is generally frowned upon because there's a risk of polluting the namespace, but if you know this isn't going to happen, and you want to keep your lines of code shorter, it's acceptable.

Development — openpyxl 3.0.4 documentation, If in doubt get in touch with the openpyxl development team. It is worthwhile to add Or use tox to run the tests on different Python versions and configurations:. TheAnswerHub is a top destination for finding answers online. Browse our content today! Find programing in python on TheAnswerHub.com.

You are importing openpyxl, which includes everything in openpyxl including openpyxl.style and everything inside that. But say you would like to use X function of openpyxl.style, then you would have to write:

openpyxl.style.X() 

If you write the second line you can simpy write:

X()

Basically the second line imports all the contents of the namespace openpyxl.style into your current namespace, removing the hassle of having to write openpyxl.style. everytime. Although it is generally a good practice to not merge namespaces like this, and not use

from _________ import *

Rather you can write

import openpyxl.style as op

and then use the X function as :

op.X()

You can also omit the line

import openpyxl 

if you are not using anything else from openpyxl other than that included in openpyxl.style

Performance — openpyxl 2.6.4 documentation, Where in doubt, we have focused on functionality over optimisation: Versions: python: 2.7.1 openpyxl: 2.6.0dev xlsxwriter: 1.0.9 Dimensions: Rows = 1000� Simpli is a top destination for finding answers online. Browse our content today! Search & Find The Answers You Want. Visit Today & Find More Results on Simpli.com.

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How to create, read, update and search through Excel files using , First, open a new Python file and import the Python CSV module. import csv I build this solution using Python 3 and openpyxl library. Openpyxl provides flexibility to read data from the individual cell or write data to it. Installation of Openpyxl. In the above section, we have discussed the openpyxl briefly and its working process. In order to use Openpyxl, one should have Python 3.7 and openpyxl 2.6.2 installed in the system.

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Comments
  • Possible duplicate of Import same python module more than once
  • I thought openpyxl is an module