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P-021: Count the number of receipt details data frame (df_receipt).
code
len(df_receipt)
output
104681
**-This is a method to count the number of rows in Pandas DataFrame / Series. -Use when you want to check how many lines there are in total. ** **
** * There are other functions that are often used when you want to check the number of rows and columns **
--Summary display of information such as the number of rows and columns
code
df_receipt.info()
output
<class 'pandas.core.frame.DataFrame'>
RangeIndex: 104681 entries, 0 to 104680
Data columns (total 9 columns):
# Column Non-Null Count Dtype
--- ------ -------------- -----
0 sales_ymd 104681 non-null int64
1 sales_epoch 104681 non-null int64
2 store_cd 104681 non-null object
3 receipt_no 104681 non-null int64
4 receipt_sub_no 104681 non-null int64
5 customer_id 104681 non-null object
6 product_cd 104681 non-null object
7 quantity 104681 non-null int64
8 amount 104681 non-null int64
dtypes: int64(6), object(3)
memory usage: 7.2+ MB
--Display the number of columns
code
len(df_receipt.columns)
output
9
--Displays the number of rows and columns
code
df_receipt.shape
output
(104681, 9)
--Displays the total number of elements (size)
code
df_receipt.size
output
942129
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