In this guide, we will learn how to write an Excel formula in Python that allows us to look up a value in a specific column and return the corresponding values from another column. This can be achieved using the VLOOKUP function, which is a powerful tool for searching and retrieving data in Excel. By understanding the step-by-step explanation and examples provided below, you will be able to implement this formula in your Python code and efficiently perform lookups in your Excel data. Let's dive in and explore how to use the VLOOKUP function in Python to look up values in a column and return values from another column.
=VLOOKUP(E1, A:B, 2, FALSE)
This formula uses the VLOOKUP function to look up a value in column E and return the corresponding values in column B.
The VLOOKUP function takes four arguments: the value to look up, the range to search in, the column index to return, and a flag indicating whether to perform an exact match or approximate match.
In this formula, E1
is the value to look up. You can change E1
to the cell reference that contains the value you want to look up.
A:B
is the range to search in. It specifies that we want to search in columns A to B. You can change A:B
to the actual range that contains your data.
2
is the column index to return. It specifies that we want to return the values from the second column of the range A:B
. You can change 2
to the desired column index.
FALSE
is the flag indicating that we want an exact match. This means that the value in column E must be an exact match for the lookup value. If you want to allow approximate matches, you can change FALSE
to TRUE
.
For example, if we have the following data in columns A and B:
| A | B |
|-------|-------|
| 1 | One |
| 2 | Two |
| 3 | Three |
| 4 | Four |
And in cell E1, we have the value 2
, the formula =VLOOKUP(E1, A:B, 2, FALSE)
would return Two
, which is the value in column B corresponding to the value 2
in column A.
If the value in cell E1 is 4
, the formula would return Four
, and so on.
Note that if the value in cell E1 does not exist in column A, the formula would return #N/A
to indicate that no match was found.