如何精确搜索和替换(How to search and replace precisely)
我有一个文本文件，其内容非常类似于以下内容
G12
G10,11
GO12
GO10,12
我要做的是将所有'G'替换为''，而不是将'GO'替换为'O'。
我正在尝试使用正则表达式，所以首先我处理的是没有逗号的行
with open(file) as f: for line in f: if re.match(r"%s[0-9]+" % 'G', line): input = line.strip('G')事实证明，“G10,11 \ n”字符串也匹配正则表达式模式，这让我感到困惑。
我的陈述是否有任何问题，或者有更简单的方法吗？ 非常感谢，
I have a text file which content is quite like following
G12
G10,11
GO12
GO10,12
What I am trying to do is replace all the 'G' with '' but not replacing 'GO' to 'O'.
I was trying to do with regular expressions, so first I am dealing with the lines without a comma
with open(file) as f: for line in f: if re.match(r"%s[0-9]+" % 'G', line): input = line.strip('G')And it turns out that the "G10,11\n" string is matching the regex pattern either, which makes me confused.
Is there any wrong with my statement, OR is there any simpler approach to do this? Many thanks,
原文：https://stackoverflow.com/questions/21983626
更新时间：2022-01-17 19:01
最满意答案
尝试这个：
Dim sourceSht As Worksheet Dim myrange As Range Dim DestRow As Integer Dim ws2 As Worksheet Dim MonthVal As String Dim rw As Range Range("D3").Select ActiveCell.FormulaR1C1 = "=MONTH(R[-1]C)" Range("D3").Select Selection.NumberFormat = "General" MonthVal = ActiveCell.Value Set sourceSht = ThisWorkbook.Worksheets("Signed") Set myrange = sourceSht.Range("Y1:Y" & sourceSht.UsedRange.Row - 1 + sourceSht.UsedRange.Rows.Count) Set ws2 = Sheets("April") DestRow = ws2.Cells(Rows.Count, "A").End(xlUp).Row ' + 1 For Each rw In myrange '.Rows If sourceSht.Cells(rw.Row, 12).Value = MonthVal Then DestRow = DestRow + 1 rw.Copy Destination:=Sheets("April").Range("A" & DestRow) End If Next rw编辑：修复第15行的潜在漏洞（从
Set myrange = sourceSht.Range("Y1:y" & sourceSht.UsedRange.Rows.Count)到Set myrange = sourceSht.Range("Y1:Y" & sourceSht.UsedRange.Row - 1 + sourceSht.UsedRange.Rows.Count)），以防顶部有未使用的行。Try this:
Dim sourceSht As Worksheet Dim myrange As Range Dim DestRow As Integer Dim ws2 As Worksheet Dim MonthVal As String Dim rw As Range Range("D3").Select ActiveCell.FormulaR1C1 = "=MONTH(R[-1]C)" Range("D3").Select Selection.NumberFormat = "General" MonthVal = ActiveCell.Value Set sourceSht = ThisWorkbook.Worksheets("Signed") Set myrange = sourceSht.Range("Y1:Y" & sourceSht.UsedRange.Row - 1 + sourceSht.UsedRange.Rows.Count) Set ws2 = Sheets("April") DestRow = ws2.Cells(Rows.Count, "A").End(xlUp).Row ' + 1 For Each rw In myrange '.Rows If sourceSht.Cells(rw.Row, 12).Value = MonthVal Then DestRow = DestRow + 1 rw.Copy Destination:=Sheets("April").Range("A" & DestRow) End If Next rwEdit: fixed a potential loophole at line 15 (from
Set myrange = sourceSht.Range("Y1:y" & sourceSht.UsedRange.Rows.Count)toSet myrange = sourceSht.Range("Y1:Y" & sourceSht.UsedRange.Row - 1 + sourceSht.UsedRange.Rows.Count)), in case there are unused rows at the top.
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