Python load properties file

How to read properties file in python

According to the ConfigObj documentation, requires you to surround multiline values in triple quotes: If modifying the properties file is out of the question, I suggest using configparser: Here’s a quick proof of concept: Output: Solution 2: Thanks for the answers, this is what I finally did: Add the section to the fist line of the properties file Remove empty lines Parse with configparser Remove first line (section added in first step) You just need to either package your code into ad egg or pass the config file during the spark-submit like: Or if running from egg file (which will contain your python modules and the config.ini)

Read the Properties of a file using Python

The content of the details tab is the EXIF metadata of the image.

Check this answer: How do i read EXIF data from an image without the use of external scripts in python?

How to read properties file in python, I have a property file called Configuration.properties containing: path=/usr/bin db=mysql data_path=/temp I need to read this file and use the variable such as path, db, and data_path in my subsequent scripts. Can I do this using configParser or simply reading the file and getting the value. Thanks in … Code sampleseparator = «=»keys = <>with open(‘conf’) as f:for line in f:if separator in line:Feedback

Reading Properties File in Pyspark

It is possible to read config files. You just need to either package your code into ad egg or pass the config file during the spark-submit like:

spark-submit --master yarn --deploy-mode cluster --py-files conf/config.ini my_pyspark_script.py 

Or if running from egg file (which will contain your python modules and the config.ini)

spark-submit --master yarn --deploy-mode cluster files --py-files my.egg my_pyspark_script.py configFile = resource_filename(Requirement.parse("myapp"), "conf/config.ini") config = ConfigParser.ConfigParser() config.read(configFile) 

How to Read Properties File in Python?, The next step is to load the properties file into our Properties object. with open (‘app-config.properties’, ‘rb’) as config_file: configs. load (config_file) Recommended Reading: Python with Statement. Now, we can read a specific property using get() method or through the index. The Properties object …

How to read multiline .properties file in python

According to the ConfigObj documentation, configobj requires you to surround multiline values in triple quotes:

Values that contain line breaks (multi-line values) can be surrounded by triple quotes. These can also be used if a value contains both types of quotes. List members cannot be surrounded by triple quotes:

If modifying the properties file is out of the question, I suggest using configparser:

In config parsers, values can span multiple lines as long as they are indented more than the key that holds them. By default parsers also let empty lines to be parts of values.

Here’s a quick proof of concept:

#!/usr/bin/env python # coding: utf-8 from __future__ import print_function try: import ConfigParser as configparser except ImportError: import configparser try: import StringIO except ImportError: import io.StringIO as StringIO test_ini = """ [some_section] messages.welcome=Hello\ World messages.bye=bye """ config = configparser.ConfigParser() config.readfp(StringIO.StringIO(test_ini)) print(config.items('some_section')) 

Thanks for the answers, this is what I finally did:

• Add the section to the fist line of the properties file
• Remove empty lines
• Parse with configparser
• Remove first line (section added in first step)

This is a extract of the code:

#!/usr/bin/python . # Add the section subprocess.Popen(['/bin/bash','-c','sed -i \'1i [default]\' '+srcDirectory+"/*.properties"], stdout=subprocess.PIPE) # Remove empty lines subprocess.Popen(['/bin/bash','-c','sed -i \'s/^$/#/g' '+srcDirectory+"/*.properties"], stdout=subprocess.PIPE) # Get all i18n files files=glob.glob(srcDirectory+"/"+baseFileName+"_*.properties") config = ConfigParser.ConfigParser() for propFile in files: . config.read(propertyFileName) value=config.get('default',"someproperty") . # Remove section subprocess.Popen(['/bin/bash','-c','sed -i \'1d\' '+srcDirectory+"/*.properties"], stdout=subprocess.PIPE) 

I still have troubles with those multilines that doesn’t start with an empty space. I just fixed them manually, but a sed could do the trick.

Format your properties file like this:

messages.welcome="""Hello World!""" messages.bye=bye 

Properties file in python (similar to Java Properties), A java properties file is valid python code: I have to differ. Some Java properties files will pass for valid python code, but certainly not all. As @mmjj said dots are a problem. So are unquoted literal strings. -1. –

I want to read from Properties file and put that value in a string based on a key from file

Test below code : https://repl.it/repls/EmptyRowdyCategories

from jproperties import Properties p = Properties() with open("foobar.properties", "rb") as f: p.load(f, "utf-8") print(p["name"].data) print(p["email"].data) 

You’re opening the file as if it’s a text file:

with open("foobar.properties", "rt") as f: p.load(f, "utf-8") 

But the jproperties docs shows that you need to open the file in binary mode:

with open("foobar.properties", "rb") as f: p.load(f, "utf-8") 

What would be a quick way to read a property file in, ConfigParser is a library to understand .cfg files, so if you write a bug against that library for not reading .properties, they are likely to kick it back and reject it — I would anyway. .properties files are not the responsibility of a .cfg parser. .cfg files require the existence of one section in most .cfg handlers, which is why …

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How to Read Properties File in Python?

While we believe that this content benefits our community, we have not yet thoroughly reviewed it. If you have any suggestions for improvements, please let us know by clicking the “report an issue“ button at the bottom of the tutorial.

We can use jproperties module to read properties file in Python. A properties file contains key-value pairs in each line. The equals (=) works as the delimiter between the key and value. A line that starts with # is treated as a comment.

Installing jproperties Library

Reading Properties File in Python

# Database Credentials DB_HOST=localhost DB_SCHEMA=Test DB_User=root DB_PWD=root@neon 

from jproperties import Properties configs = Properties() 

with open('app-config.properties', 'rb') as config_file: configs.load(config_file) 

Recommended Reading: Python with Statement Now, we can read a specific property using get() method or through the index. The Properties object is very similar to a Python Dictionary. The value is stored in a PropertyTuple object, which is a named tuple of two values — data and meta. The jproperties support properties metadata too, but we are not interested in that here.

print(configs.get("DB_User")) # PropertyTuple(data='root', meta=<>) print(f'Database User: configs.get("DB_User").data>') # Database User: root print(f'Database Password: configs["DB_PWD"].data>') # Database Password: root@neon 

print(f'Properties Count: len(configs)>') # Properties Count: 4 

What if the key doesn’t exist?

random_value = configs.get("Random_Key") print(random_value) # None 

But, if we use the index then KeyError is raised. In that case, it’s better to handle this exception using try-except block.

try: random_value = configs["Random_Key"] print(random_value) except KeyError as ke: print(f'ke>, lookup key was "Random_Key"') # Output: # 'Key not found', lookup key was "Random_Key" 

Printing All the Properties

We can use the items() method to get a collection of Tuple, which contains keys and corresponding PropertyTuple values.

items_view = configs.items() print(type(items_view)) for item in items_view: print(item) 

class 'collections.abc.ItemsView'> ('DB_HOST', PropertyTuple(data='localhost', meta=>)) ('DB_SCHEMA', PropertyTuple(data='Test', meta=>)) ('DB_User', PropertyTuple(data='root', meta=>)) ('DB_PWD', PropertyTuple(data='root@neon', meta=>)) 

for item in items_view: print(item[0], '=', item[1].data) 

DB_HOST = localhost DB_SCHEMA = Test DB_User = root DB_PWD = root@neon 

Getting List of Keys from the Properties File

from jproperties import Properties configs = Properties() with open('app-config.properties', 'rb') as config_file: configs.load(config_file) items_view = configs.items() list_keys = [] for item in items_view: list_keys.append(item[0]) print(list_keys) # ['DB_HOST', 'DB_SCHEMA', 'DB_User', 'DB_PWD'] 

Python Read Properties File into Dictionary

A properties file is the same as a dictionary. So, it’s a common practice to read the properties file into a dictionary. The steps are similar to above, except for the change in the iteration code to add the elements to a dictionary.

db_configs_dict = > for item in items_view: db_configs_dict[item[0]] = item[1].data print(db_configs_dict) # 

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Properties File — Python Read & Write

This tutorial explains step by step to read and write an properties file in Python with example You learned read a properties file with key and values as well as line by line and also write key and values to properties file.

• How to read properties file using configparser in python
• Parse Properties file using JProperties library in phyton
• Write to Properties file in Python

How to read properties in Python with example?

In this example, you will learn how to Read key and its values from an properties file and display to console

Let’s declare properties file

Create a properties object, Properties is an data strucure to store key and values in java

Create URL object using ClassLoader . getSystemResource method

Create a InputStream using url.openStream method

Load the properties content into java properties object using load method

Add try and catch block for IOExceptions and FIleNotFoundException

Oneway, Print the value using getProperty with key of an properties object

Another way is to iterate properties object for loop

First, get all keys using stringPropertyNames

using for loop print the key and values.

 catch (FileNotFoundException fie) < fie.printStackTrace(); >catch (IOException e) < e.printStackTrace(); >System.out.println(properties.getProperty("hostname")); Set keys = properties.stringPropertyNames(); for (String key : keys) < System.out.println(key + " - " + properties.getProperty(key)); >> > 

How to read properties file line by line in java

• created a File object with absolute path
• Create BufferedReader using FileReader object
• get First line of properties file using readLine of BufferedReader
• Loop using while loop until end of line reached
• Print each line

 > catch (FileNotFoundException e1) < e1.printStackTrace(); >catch (IOException e) < e.printStackTrace(); >finally < try < br.close(); >catch (IOException e) < e.printStackTrace(); >> > > 

How to write a key and values to an properties file in java

In this example, You can read and write an properties using

• First create an File object
• Create a writer object using FileWriter
• Create properties object and add new properties or update existing properties if properties file exists
• setProperties method do update or add key and values
• store method of properties object writes to properties file, You have to add the comment which append to properties file as a comment

Here is an complete example read and write an properties file

 catch (FileNotFoundException e) < e.printStackTrace(); >catch (IOException e) < e.printStackTrace(); >> > 

Conclusion

You learned read a properties file with key and values as well as line by line and also write key and values to properties file

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property 2.6.2

A python module to load property files. Recursively define properties, load from env.

Навигация

Ссылки проекта

Статистика

Метаданные

Лицензия: MIT License (MIT)

Метки property, read-property-file, property-interpolation

Сопровождающие

Классификаторы

Описание проекта

pythonpropertyfileloader

A python module to load property files

• Load multiple property files
• Recursively define properties (Similar to PropertyPlaceholderConfigurer) in spring which lets you use $ to refer to already defined property)
• Placeholders are also resolved using env variables, like the spring property loader does, if the class is instantiated with the use_env argument (defaults to false for backward compatibility)

Install

Example

my_file.properties

  I am awesome     fudge   a very long property that is described  the property file which takes up  lines can be defined by the escape character as it is  here     /opt/myapp/        /fudge-bar/', /ext/.dat'> 

Develop

git clone https://github.com/anandjoshi91/pythonpropertyfileloader.git  pythonpropertyfileloader   pip install pipreqs pipreqs . pip install pytest pytest pip install twine update setup.py python setup.py sdist bdist_wheel twine check dist/* twine upload dist/*

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