怎么删除csv中某行的数据
时间: 2023-05-29 18:01:15 浏览: 234
要删除CSV文件中的某行数据,你需要使用Python内置的csv模块。具体步骤如下:
1. 打开CSV文件,读取所有行数据
```python
import csv
with open('file.csv', 'r') as csv_file:
reader = csv.reader(csv_file)
rows = list(reader)
```
2. 根据需求删除某行数据
- 根据行号删除:
```python
row_to_delete = 3 # 删除第4行数据
del rows[row_to_delete]
```
- 根据某一列的值删除:
```python
column_to_check = 2 # 要检查的列,从0开始计数
value_to_delete = 'delete_value' # 要删除的值
for row in rows:
if row[column_to_check] == value_to_delete:
rows.remove(row)
```
3. 将删除后的数据保存到新的CSV文件中
```python
with open('new_file.csv', 'w', newline='') as new_csv_file:
writer = csv.writer(new_csv_file)
for row in rows:
writer.writerow(row)
```
完整代码:
```python
import csv
with open('file.csv', 'r') as csv_file:
reader = csv.reader(csv_file)
rows = list(reader)
row_to_delete = 3 # 要删除的行,从0开始计数
del rows[row_to_delete]
with open('new_file.csv', 'w', newline='') as new_csv_file:
writer = csv.writer(new_csv_file)
for row in rows:
writer.writerow(row)
```
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