from openpyxl.utils import formula_to_value

As an AI language model, I cannot import modules or execute code. However, I can tell you that the `formula_to_value` function in the `openpyxl.utils` module is used to convert a formula in a cell to its resulting value. This can be useful when you want to extract the final result of a formula in a cell, rather than the formula itself.

相关问题

Cannot get a STRING value from a ERROR formula cell

当我们在Excel中使用公式时，如果公式出现错误，那么单元格将会显示一个错误值。如果我们试图从这个单元格中获取字符串值，就会出现“Cannot get a STRING value from a ERROR formula cell”的错误。这是因为错误值不是字符串类型，而是错误类型。我们需要先判断单元格是否包含错误值，如果是，则需要处理错误值，否则才能获取单元格的字符串值。

以下是处理错误值的示例代码：

import openpyxl

# 打开Excel文件
wb = openpyxl.load_workbook('example.xlsx')

# 选择工作表
sheet = wb['Sheet1']

# 获取单元格的值
cell_value = sheet['A1'].value

# 判断单元格是否包含错误值
if type(cell_value) == openpyxl.utils.cell.CellError:
    # 处理错误值
    cell_value = None

# 获取单元格的字符串值
if cell_value is not None:
    cell_value = str(cell_value)

print(cell_value)

openpyxl FORMULAE

openpyxl is a Python library that allows you to work with Excel files. It provides functionality to read, write, and modify Excel files. When it comes to formulas in Excel files, openpyxl supports handling formulas through the `openpyxl.formula` module.

To access and manipulate formulas in openpyxl, you can use the `cell` object's `value` attribute. Here's an example of how you can set a formula in a cell using openpyxl:

from openpyxl import Workbook
from openpyxl.utils import get_column_letter
from openpyxl.formula import Tokenizer

# Create a new workbook
wb = Workbook()
ws = wb.active

# Set a formula in cell A1
ws['A1'].value = '=SUM(B1:C1)'
# Get the formula from cell A1
formula = ws['A1'].value

# Parse the formula using Tokenizer
tokenizer = Tokenizer(formula)
parsed_formula = tokenizer.items

# Print the parsed formula
for item in parsed_formula:
    print(item)

# Save the workbook
wb.save('example.xlsx')

In this example, we set a formula `=SUM(B1:C1)` in cell A1. We then retrieve the formula from cell A1 and parse it using `Tokenizer`. The parsed formula is then printed to the console.

Note that openpyxl does not evaluate formulas automatically. To calculate the results of the formulas, you can use other libraries like `xlwings` or `pandas`.