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Reading a CSV File

Deepika Sahu answered on June 19, 2020 Popularity 10/10 Helpfulness 1/10

answer Reading a CSV File

Reading a CSV File

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import java.io.FileReader;
import java.io.IOException;

import org.supercsv.cellprocessor.Optional;
import org.supercsv.cellprocessor.ParseInt;
import org.supercsv.cellprocessor.ParseLong;
import org.supercsv.cellprocessor.constraint.NotNull;
import org.supercsv.cellprocessor.constraint.StrRegEx;
import org.supercsv.cellprocessor.ift.CellProcessor;
import org.supercsv.io.CsvBeanReader;
import org.supercsv.io.ICsvBeanReader;
import org.supercsv.prefs.CsvPreference;

public class ReadCSVFileExample {

	static final String CSV_FILENAME = "data.csv";

	public static void main(String[] args) throws IOException
	{
		try(ICsvBeanReader beanReader = new CsvBeanReader(new FileReader(CSV_FILENAME), CsvPreference.STANDARD_PREFERENCE))
		{
			// the header elements are used to map the values to the bean
			final String[] headers = beanReader.getHeader(true);
			//final String[] headers = new String[]{"CustomerId","CustomerName","Country","PinCode","Email"};
			final CellProcessor[] processors = getProcessors();

			Customer customer;
			while ((customer = beanReader.read(Customer.class, headers, processors)) != null) {
				System.out.println(customer);
			}
		}
	}

	/**
	 * Sets up the processors used for the examples.
	 */
	private static CellProcessor[] getProcessors() {
		final String emailRegex = "[a-z0-9\\._]+@[a-z0-9\\.]+";
		StrRegEx.registerMessage(emailRegex, "must be a valid email address");

		final CellProcessor[] processors = new CellProcessor[] {
				new NotNull(new ParseInt()), // CustomerId
				new NotNull(), // CustomerName
				new NotNull(), // Country
				new Optional(new ParseLong()), // PinCode
				new StrRegEx(emailRegex) // Email
		};
		return processors;
	}
}

Popularity 10/10 Helpfulness 1/10 Language java

Source: howtodoinjava.com

Tags: csv file java

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Contributed on Dec 30 2022

Deepika Sahu

0 Answers Avg Quality 2/10

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python read file csv

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import csv
with open('file_csv.csv', newline='') as file:
    reader = csv.reader(file)
    for row in reader:
        print(row)

Popularity 10/10 Helpfulness 8/10 Language python

Source: Grepper

Tags: csv

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Contributed on Mar 01 2022

Filthy Fox

0 Answers Avg Quality 2/10

reading a csv file in python

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import csv

# open the file
with open('csvfile.csv' , 'r') as csvfile:
    # create the object of csv.reader()
    csv_file_reader = csv.reader(csvfile,delimiter=',')
    for row in csv_file_reader:
        print(row)

Popularity 10/10 Helpfulness 8/10 Language python

Source: www.alixaprodev.com

Tags: csv

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Contributed on Apr 22 2022

Pythonist

0 Answers Avg Quality 2/10

how to read a csv file in python

Comments(1)

import csv
with open('some.csv', newline='') as f:
    reader = csv.reader(f)
    for row in reader:
        print(row)

Popularity 10/10 Helpfulness 7/10 Language python

Source: docs.python.org

Tags: csv

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Contributed on May 14 2021

Gaming Computerist

0 Answers Avg Quality 2/10

open csv file in python

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import csv
with open('filename.csv') as csvfile:
     spamreader = csv.reader(csvfile)
     for row in spamreader:
         print(row)

Popularity 10/10 Helpfulness 7/10 Language python

Source: Grepper

Tags: csv

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Contributed on Aug 27 2022

yasir13 moohammed13

0 Answers Avg Quality 2/10

how to open csv file in python

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import pandas as pd # pip install pandas

#read the CSV file
data_file = =pd.read_csv('some_file.csv')
print(data_file)

Popularity 10/10 Helpfulness 5/10 Language python

Source: Grepper

Tags: csv

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Contributed on Mar 01 2021

Tejas Naik

0 Answers Avg Quality 2/10

how to read a csv file in python

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import pandas as pd
df=pd.read_csv('the_file.csv')

Popularity 10/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: csv

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Contributed on Jun 19 2020

SimTheGreat

0 Answers Avg Quality 2/10

read file csv in python

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import pandas as pd
import numpy as np
datas = pd.read_csv('data.csv')
a = datas.to_numpy()
print(a[0])

Popularity 10/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: csv

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Contributed on Jul 21 2021

Cute Copperhead

0 Answers Avg Quality 2/10

reading csv file in python

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lines = [] # a list of lists, the first list being a header, and the rest being the data
with open("your_filename", newline='') as f:
    file = csv.reader(f)
    for each in file:
        lines.append(each)

print(lines)

Popularity 9/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: csv

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Contributed on Apr 05 2023

JessiCoder

0 Answers Avg Quality 2/10

Python Read the CSV file

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dataFrame = pd.read_csv("C:\\Users\\amit_\\Desktop\\CarRecords.csv")

Popularity 10/10 Helpfulness 3/10 Language python

Source: www.codegrepper.com

Tags: csv

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Contributed on Jun 19 2022

Osiris Valverde

0 Answers Avg Quality 2/10

read csv

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df = pd.read_csv("sample_file.csv", usecols=col_list)

Popularity 10/10 Helpfulness 2/10 Language whatever

Source: www.adamsmith.haus

Tags: csv

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Contributed on Jun 07 2022

Chen Huiwen

0 Answers Avg Quality 2/10

Reading a CSV File

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