Traceback (most recent call last): File "C:\Users\Yang\AppData\Local\Programs\Python\Python39\lib\site-packages\pandas\core\indexes\base.py", line 3080, in get_loc return self._engine.get_loc(casted_key) File "pandas\_libs\index.pyx", line 70, in pandas._libs.index.IndexEngine.get_loc File "pandas\_libs\index.pyx", line 101, in pandas._libs.index.IndexEngine.get_loc File "pandas\_libs\hashtable_class_helper.pxi", line 4554, in pandas._libs.hashtable.PyObjectHashTable.get_item File "pandas\_libs\hashtable_class_helper.pxi", line 4562, in pandas._libs.hashtable.PyObjectHashTable.get_item KeyError: 'time' The above exception was the direct cause of the following exception: Traceback (most recent call last): File "E:\liuyuan\signal processing\呼吸波形显示.py", line 7, in <module> time = data['time'] File "C:\Users\Yang\AppData\Local\Programs\Python\Python39\lib\site-packages\pandas\core\frame.py", line 3024, in __getitem__ indexer = self.columns.get_loc(key) File "C:\Users\Yang\AppData\Local\Programs\Python\Python39\lib\site-packages\pandas\core\indexes\base.py", line 3082, in get_loc raise KeyError(key) from err KeyError: 'time'
时间: 2023-07-06 22:29:21 浏览: 104
Python程序基础:Python中的异常.pptx
5星 · 资源好评率100%
这个错误通常是由于CSV文件中的列名与您的代码中的列名不匹配而引起的。请检查您的CSV文件中的列名,以确保它们与您的代码中使用的名称相同。
如果您的CSV文件中没有列名,则可以使用pandas库的read_csv函数的header参数来设置列名。例如:
```python
import pandas as pd
import matplotlib.pyplot as plt
# 读取CSV文件并设置列名
df = pd.read_csv('path/to/your/csv/file.csv', header=None, names=['time', 'breath_data'])
# 获取呼吸数据列和时间列
time = df['time']
breath_data = df['breath_data']
# 绘制呼吸波形
plt.plot(time, breath_data)
plt.xlabel('Time')
plt.ylabel('Breath Data')
plt.title('Breath Waveform')
plt.show()
```
在这个示例代码中,我们使用read_csv函数的header参数设置CSV文件中没有列名,并使用names参数设置列名。然后,我们使用列名来获取呼吸数据列和时间列,以便绘制波形。
阅读全文