如何删除包含 alpha 值或整个 dbf 列的 dbf 行

How to delete dbf rows containing an alpha value or an entire dbf column

我想删除我的 dfb 上包含特定数据的一些行和列。

让我们假设 dfb 的结构如下图所示,并且我想删除带有 'knapford' 的行作为 'Prov' 和 'Reg' 列。

当我尝试执行此脚本时:

table = dbf.Table(wonderland.dbf).open(mode=dbf.READ_WRITE)
with table as tab:
    print (table)
    for record in dbf.Process(tab):
        dbf.delete(record[0])

我收到这个错误:

  File "<ipython-input-4-d8feabfc9819>", line 4, in <module>
    dbf.delete(record[0])

  File "C:\Users\fassi\AppData\Local\Continuum\anaconda3\lib\site-packages\dbf\__init__.py", line 8349, in delete
    if not template and record._meta.status == CLOSED:

AttributeError: 'int' object has no attribute '_meta'

我想到了另一个建议,但我想知道它是否真的会删除该行的所有字段,只是一些特定的字段或所有记录!

table = dbf.Table(wonderland.dbf).open(mode=dbf.READ_WRITE)
with table as tab:
    dbf.delete_fields(table, Reg)
    for record in dbf.Process(tab):
        if record[0].strip()=='Knapford': #since we've delete the Reg, Prov is becoming record[0]?
            dbf.delete(record)

提前致谢

我认为这应该可行:

from simpledbf import Dbf5

dbf = Dbf5('file.dbf')
data = dbf.to_dataframe()

for row in range(len(data)):
    Reg= data.loc[row,'Reg']
    Prov = data.loc[row,'Prov']
    if Reg =='knapford' or Prov =='knapford':
        data.drop(index=row, axis=0, inplace=True)

其他脚本运行良好:

import dbf
with table as tab:
    for record in dbf.Process(tab):
        if record[1].strip()=='Knapford':
            #print (record)
            dbf.delete(record)
table.pack()