python append column to dataframe code example
Example 1: add rows to dataframe pandas
df = df.append({'a':1, 'b':2}, ignore_index=True)
Example 2: how to add a column to a pandas df
df.insert(location, column_name, list_of_values)
df.insert(0, 'new_column', ['a','b','c'])
df['new_column_name'] = value
Example 3: python push to dataframe pandas
df = pd.DataFrame({
'a':[1,2,3],
'b':[5,6,7]
})
df2 = pd.DataFrame({
'a':[11,12,13],
'b':[15,16,17]
})
df = df.append(df2, ignore_index = True )
print(df)
Example 4: append one column pandas dataframe
df1 = df1.join(df2[column])
Example 5: how to add a new column to the pandas df
import pandas as pd
data = {'Name': ['Josh', 'Stephen', 'Drake', 'Daniel'],
'Height': [5.5, 6.0, 5.3, 4.9]}
'''
printing data at this point will show the following
Name Height
0 Josh 5.1
1 Stephen 6.2
2 Drake 5.1
3 Daniel 5.2
'''
df.insert(2, "Age", [20, 21, 20, 19])
'''
printing data now will show the following
Name Height Age
0 Josh 5.1 20
1 Stephen 6.2 21
2 Drake 5.1 20
3 Daniel 5.2 19
'''