Question

我有一个包含多年水数据的csv文件。我将每个水年度分解为自己的数据框。现在，我想对那些水年做一些数学运算，然后将每个水年保存到自己的Excel工作表中。

代码的数学部分正在运行，但是在命名和正确保存循环输出的最后一步时遇到了麻烦。现在，我可以创建excel文件并正确创建工作表名称，但是循环仅将最终迭代保存到所有工作表中。我已经四处搜寻，但无法获得其他类似问题的答案。这是我的第一个python程序，因此请多多指教。

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Answer 1

输入您的代码

writer = pd.ExcelWriter('WFT.xlsx', engine='xlsxwriter')
wyID = [wy2014, wy2015, wy2016, wy2017]
seq = ['wy2014', 'wy2015', 'wy2016', 'wy2017']

for df in wyID: # outer loop that figures out wy20xx
    df = df.sort_values(by=['turbidity'], ascending=False)
    df['rank'] = df['turbidity'].rank(method = 'first', ascending=0)
    df['cunnanes'] = (df['rank'] - 0.4)/(len(df['rank']) + 0.2)*100
    for name in seq: # you loop through all the names and write all sheets every time. you want to be writing just one
        df.to_excel(writer, sheet_name= name)
writer.save()

代替尝试这个。

for i, df in enumerate(wyID): # outer loop that figures out wy20xx
        df = df.sort_values(by=['turbidity'], ascending=False)
        df['rank'] = df['turbidity'].rank(method = 'first', ascending=0)
        df['cunnanes'] = (df['rank'] - 0.4)/(len(df['rank']) + 0.2)*100
        df.to_excel(writer, sheet_name= seq[i]) # writes to correct wy20xx sheet
writer.save() # Now you're done writing the excel

将循环输出保存到多个Excel工作表

1 个答案: