module 'serial' has no attribute 'serial'

import serial

from serial import serial

pip install --upgrade pyserial

import serial

# 创建一个串口对象
ser = serial.Serial('/dev/ttyUSB0', 9600)

# 读取数据
data = ser.readline()
print(data)

import serial

# 配置串口参数
port = '/dev/ttyUSB0'  # 根据实际情况修改串口号
baudrate = 9600

try:
    # 创建串口对象
    ser = serial.Serial(port, baudrate)
    
    if ser.is_open:
        print(f"成功打开串口 {port}")
        
        # 读取数据
        while True:
            if ser.in_waiting > 0:
                data = ser.readline().decode('utf-8').strip()
                print(f"收到数据: {data}")
except serial.SerialException as e:
    print(f"打开串口失败: {e}")
finally:
    if ser and ser.is_open:
        ser.close()