Скачать или смотреть Replace Values of pandas DataFrame in Python (Example) | Substitute & Exchange by Index & Condition

How to exchange values in a pandas DataFrame in the Python programming language. More details: https://statisticsglobe.com/replace-v...
Python code of this video:

import pandas as pd # Import pandas library in Python

data = pd.DataFrame({'x1':range(1, 5), # Create example DataFrame
'x2':range(5, 1, - 1),
'x3':range(3, 7)})
print(data) # Print example DataFrame

data_new1 = data.copy() # Create copy of DataFrame
data_new1.at[2, 'x1'] = 999 # Replace values in DataFrame
print(data_new1) # Print updated DataFrame

data_new2 = data.copy() # Create copy of DataFrame
data_new2['x1'] = data_new2['x1'].replace([1, 3], 999) # Replace values in DataFrame
print(data_new2) # Print updated DataFrame

data_new3 = data.copy() # Create copy of DataFrame
data_new3 = data_new3.replace(4, 999) # Replace values in DataFrame
print(data_new3) # Print updated DataFrame

data_new4 = data.copy() # Create copy of DataFrame
data_new4.loc[data_new4.x1 ＜= 2, 'x1'] = 999 # Replace values in DataFrame
print(data_new4) # Print updated DataFrame

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