How to display DataFrame as a table in Markdown

By executing the following function, it can be output in tabular format for Markdown.

def df_table(df):
    for col in df.columns:
        print('|', col, end="", sep='')
    print('|')
    
    for col in df.columns:
        print('| ---- ', end="", sep='')
    print('|')
    
    for row in range(len(df)):
        print('|', end="")
        for col in range(df.shape[1]):
            print(df.iat[row,col],'|', end="", sep='')
        print()

| sepal length (cm) | sepal width (cm) | petal length (cm) | petal width (cm) | target | 
| ---- | ---- | ---- | ---- | ---- |
| 5.1 | 3.5 | 1.4 | 0.2 | setosa | 
| 4.9 | 3.0 | 1.4 | 0.2 | setosa | 
| 4.7 | 3.2 | 1.3 | 0.2 | setosa | 
| 4.6 | 3.1 | 1.5 | 0.2 | setosa | 
| 5.0 | 3.6 | 1.4 | 0.2 | setosa | 

If you copy and paste it and output it to a Markdown file, It can be displayed as a table as shown below.

sepal length (cm) sepal width (cm) petal length (cm) petal width (cm) target
5.1 3.5 1.4 0.2 setosa
4.9 3.0 1.4 0.2 setosa
4.7 3.2 1.3 0.2 setosa
4.6 3.1 1.5 0.2 setosa
5.0 3.6 1.4 0.2 setosa

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