python 从二进制文件中读取浮点数据

import numpy as np
import struct

def toDoubleList(dataStr):
    bytesTotal = len(dataStr)
    print("bytesTotal: ", bytesTotal)
    # 下面的双斜线是除法结果为整数
    segLen = bytesTotal // 8
    print("segLen: ", segLen)
    # 如果考虑字节序,字节序为big-endian,则以下语句改为  data = struct.unpack('>'+str(bytesTotal/8)+'d',dataStr)
    # 相关匹配格式和字节序请见: https://docs.python.org/zh-cn/3/library/struct.html#struct.calcsize
    data = struct.unpack(segLen * 'd', dataStr)
    return data


#########
def toFloat32List(dataStr):
    bytesTotal = len(dataStr)
    print("bytesTotal: ", bytesTotal)
    # 下面的双斜线是除法结果为整数
    segLen = bytesTotal // 4
    print("segLen: ", segLen)
    # 如果考虑字节序,字节序为big-endian,则以下语句改为  data = struct.unpack('>'+str(bytesTotal/4)+'f',dataStr)
    data = struct.unpack(segLen * 'f', dataStr)
    return data


def toUint16List(dataStr):
    bytesTotal = len(dataStr)
    print("bytesTotal: ", bytesTotal)
    # 下面的双斜线是除法结果为整数
    segLen = bytesTotal // 2
    print("segLen: ", segLen)
    # 如果考虑字节序,字节序为big-endian,则以下语句改为  data = struct.unpack('>'+str(bytesTotal/2)+'H',dataStr)
    data = struct.unpack(segLen * 'H', dataStr)
    return data


def toUint32List(dataStr):
    bytesTotal = len(dataStr)
    print("bytesTotal: ", bytesTotal)
    # 下面的双斜线是除法结果为整数
    segLen = bytesTotal // 4
    print("segLen: ", segLen)
    # 如果考虑字节序,字节序为big-endian,则以下语句改为  data = struct.unpack('>'+str(bytesTotal/4)+'I',dataStr)
    data = struct.unpack(segLen * 'I', dataStr)
    return data


def toUintLongLongList(dataStr):
    bytesTotal = len(dataStr)
    print("bytesTotal: ", bytesTotal)
    # 下面的双斜线是除法结果为整数
    segLen = bytesTotal // 8
    print("segLen: ", segLen)
    # 如果考虑字节序,字节序为big-endian,则以下语句改为  data = struct.unpack('>'+str(bytesTotal/8)+'Q',dataStr)
    data = struct.unpack(segLen * 'Q', dataStr)
    return data


#### 测试代码

file_bin = "path/to/binfile"
with open(file_bin, 'rb') as f_r:
    dataStr = f_r.read()
    data_vs = toFloat32List(dataStr)

struct --- 将字节串解读为打包的二进制数据 — Python 3.12.0 文档

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转载自blog.csdn.net/ytusdc/article/details/133749167