```python

from Bio import SeqIO

# 讀取FASTA文件

for record in SeqIO.parse("my_sequence.fasta", "fasta"):

print(record.id)

print(repr(record.seq))

```

清潔能源開發(fā)

```python

import pandas as pd

# 讀取CSV文件

df = pd.read_csv('solar_data.csv')

# 刪除缺失值

df = df.dropna()

# 將時間戳轉(zhuǎn)換為日期時間對象

df['timestamp'] = pd.to_datetime(df['timestamp'])

```

生態(tài)牧場經(jīng)營

```python

import matplotlib.pyplot as plt

# 讀取數(shù)據(jù)

weight = [, , , , ]

age = [, , , , ]

# 繪制圖表

plt.plot(age, weight)

plt.xlabel('年齡')

plt.ylabel('體重')

plt.title('動物體重增長')

plt.show()

```

刀具設(shè)計

```python

import numpy as np

# 定義參數(shù)

length =

width =

angle = np.arctan(width / length)

', angle)

```