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pandas dataframe apply

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Clean Cottonmouth answered on August 2, 2022 Popularity 10/10 Helpfulness 2/10

answer pandas dataframe apply

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df = pd.DataFrame([[4, 9]] * 3, columns=['A', 'B'])
df.apply(np.sqrt)
#     A    B
#0  2.0  3.0
#1  2.0  3.0
#2  2.0  3.0

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Tags: apply dataframe pandas python

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Contributed on Aug 02 2022

Clean Cottonmouth

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apply function in pandas

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# to Add a lambda function which will increase the entry in each column by 3
df["column_name"] = df["column_name"].apply(lambda x:x+3)
 Eg:  df["MPG_City"] = df["MPG_City"].apply(lambda x: x+3)

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Contributed on Dec 09 2022

Unusual Unicorn

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pandas apply

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import pandas as pd

s = pd.Series([1,2,3,4,5])
  
# adding 5 to each value
new = s.apply(lambda num : num + 5)
  
# printing elements of old and new series
print(s.head().values,"\n",new.head().values)
#  [1 2 3 4 5] 
#  [6 7 8 9 10]

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Contributed on Aug 02 2022

Clean Cottonmouth

0 Answers Avg Quality 2/10

pandas apply

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# This function doubles the input value
def double(x):
  return 2*x
 
# Apply this function to double every value in a specified column
df.column1 = df.column1.apply(double)
 
# Lambda functions can also be supplied to `apply()`
df.column2 = df.column2.apply(lambda x : 3*x)
 
# Applying to a row requires it to be called on the entire DataFrame
df['newColumn'] = df.apply(lambda row: 
  row['column1'] * 1.5 + row['column2'],
  axis=1
)

Popularity 10/10 Helpfulness 3/10 Language python

Source: www.codecademy.com

Tags: pandas-apply pandas-app

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Contributed on Aug 03 2023

Wide-eyed Wren

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show php version

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Method 1: Using the Command Line

Open a terminal and run the following command:

php -v

This will display the PHP version installed on your system.

Method 2: Using the phpinfo() Function

Create a new PHP file (e.g., phpinfo.php) with the following content:

<?php
phpinfo();
?>

Save the file and upload it to your web server (e.g., /var/www/html/).

Open a web browser and navigate to http://localhost/phpinfo.php. This will display a page with information about your PHP installation, including the version.

Method 3: Using the dpkg Command

Open a terminal and run the following command:

dpkg -l | grep php

This will display a list of installed PHP packages, including the version.

Method 4: Using the apt Command

Open a terminal and run the following command:

apt show php

This will display information about the PHP package, including the version.

These methods will help you determine the PHP version installed on your Parrot OS system.

Popularity 6/10 Helpfulness 1/10 Language php

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Tags: php show version

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Contributed on Oct 01 2024

Saqib Tahir

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pandas apply

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import pandas as pd
 
# Function to add
def add_values(row):
    return row['A'] + row['B'] + row['C']
 
def main():
    # Create a dictionary with three fields each
    data = {
        'A': [1, 2, 3],
        'B': [4, 5, 6],
        'C': [7, 8, 9]}
 
    # Convert the dictionary into DataFrame
    df = pd.DataFrame(data)
    print("Original DataFrame:\n", df)
 
    # Apply the user-defined function to every row
    df['add'] = df.apply(add_values, axis=1)
 
    print('\nAfter Applying Function: ')
    # Print the new DataFrame
    print(df)
 
if __name__ == '__main__':
    main()

Popularity 6/10 Helpfulness 1/10 Language python

Source: www.geeksforgeeks.org

Tags: pandas-apply python

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Contributed on Oct 02 2024

Innocent Iguana

0 Answers Avg Quality 2/10

pandas dataframe apply

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