实现数字到Excel中列序号的转换

关键字PythonExcelChatGPT的代码

最近的工作中,涉及到有关处理表格的操作,经常用到数字和Excel中列序号的转化功能。
对应关系如下:

    列序号:A B ... Z      AA AB ... AZ      BA BB ... BZ列数字:1 2 ... 26     27 28 ... 52      53 54 ... 78

经过分析和验证测试,我就自己写了一个从数字到列序号(字母)的转换函数,如下:

def convert_number_to_excel_column_letter(col_num):"""把给定的列数字转换为Excel中对应的列序号(字母名称),如:1 => A, 2 => B。以下为Excel中列数字和列序号之间的对应关系:列序号:A B ... Z      AA AB ... AZ      BA BB ... BZ列数字:1 2 ... 26     27 28 ... 52      53 54 ... 78:param col_num:列数字:return: Excel中的列序号(字母名称)"""repeat_span_num = 26 # 一个循环跨度if col_num < 1:col_num = 1high = (col_num-1) // repeat_span_numlow = col_num - high * repeat_span_num# print("high =", high, ", low =", low)result = chr(ord('A') + low - 1)if high > 0:result = convert_number_to_excel_column_letter(high) + result# print(col_num, "=>", result)return result# Example usage
print(convert_number_to_excel_column_letter(1))  # Output: "A"
print(convert_number_to_excel_column_letter(27))  # Output: "AA"
print(convert_number_to_excel_column_letter(28))  # Output: "AB"
print(convert_number_to_excel_column_letter(53))  # Output: "BA"
print(convert_number_to_excel_column_letter(1000))  # Output: "ALL"

下面是ChatGPT回答\color{#0000FF}{下面是ChatGPT回答}下面是ChatGPT回答

提问:用Python实现如下功能:输入一个数字,返回Excel中对应列的字母序号。

ChetGPT:

import stringdef number_to_column(n):"""Convert a number to the corresponding column letter in Excel"""column = ""while n > 0:n -= 1column = string.ascii_uppercase[n % 26] + columnn //= 26return column# Example usage
print(number_to_column(1))  # Output: "A"
print(number_to_column(27))  # Output: "AA"
print(number_to_column(28))  # Output: "AB"
print(number_to_column(53))  # Output: "BA"
print(number_to_column(1000))  # Output: "ALL"

测试发现,ChatGPT给的代码完全没有问题。甚至比我的代码更加简洁!不得不说,ChatGTP还是很厉害的!

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