change float to int python pandas code example

Example 1: convert float to integer pandas

>>> df['C'] = df['C'].apply(np.int64)
>>> print(df)
...    A  B  C         D
... 0  8  0  1  6.226750
... 1  1  9  9  8.522808
... 2  1  4  2  7.739108

Example 2: pandas convert float to int

df['col'] = df['col'].astype(int)