Python SDF 阅读器失败答案

【问题标题】：Python SDF reader failurePython SDF 阅读器失败
【发布时间】：2019-07-25 15:07:07
【问题描述】：

我想运行这个 python 脚本。我在我的主目录中通过以下命令在 linux 中安装了 SDF 阅读器

python -m pip install --upgrade sdf

它似乎安装成功。 python脚本如下

import sdf
import matplotlib
matplotlib.use('agg')
import matplotlib.pyplot as plt
import numpy as np
import os
from numpy import ma
from matplotlib import colors, ticker, cm
from matplotlib.mlab import bivariate_normal
from matplotlib.colors import ListedColormap


if __name__ == "__main__":
  print ('This is main of module "test2d.py"')
  ######## Constant defined here ########
  pi        =     3.1415926535897932384626
  q0        =     1.602176565e-19 # C
  m0        =     9.10938291e-31  # kg
  v0        =     2.99792458e8    # m/s^2
  kb        =     1.3806488e-23   # J/K
  mu0       =     4.0e-7*pi       # N/A^2
  epsilon0  =     8.8541878176203899e-12 # F/m
  h_planck  =     6.62606957e-34  # J s
  wavelength=     1.0e-6
  frequency =     v0*2*pi/wavelength

  exunit    =     m0*v0*frequency/q0
  bxunit    =     m0*frequency/q0
  denunit    =     frequency**2*epsilon0*m0/q0**2
  print 'electric field unit: '+str(exunit)
  print 'magnetic field unit: '+str(bxunit)
  print 'density unit nc: '+str(denunit)

  font = {'family' : 'helvetica',  
          'color'  : 'black',  
          'weight' : 'normal',  
          'size'   : 20,  
          }  



  n=47
  data = sdf.read("./"+str(n).zfill(4)+".sdf",dict=True)
  header=data['Header']
  time=header['time']
  x  = data['Grid/Grid_mid'].data[0]/1.0e-6
  y  = data['Grid/Grid_mid'].data[1]/1.0e-6
  y  = y[600:1799]
  X, Y = np.meshgrid(x, y)

它给了我以下错误：

Traceback (most recent call last):
  File "epochvis.py", line 45, in <module>
    data = sdf.read("./"+str(n).zfill(4)+".sdf",dict=True)
AttributeError: 'module' object has no attribute 'read'

有什么想法吗？提前谢谢你。

【问题讨论】：

标签： python sdf

【解决方案1】：

sdf 没有读取功能。

尝试在你的 python shell 中输入以下内容

import sdf
help(sdf)

你会看到

FUNCTIONS
    load(filename, objectname='/', unit=None, scale_units=None)
        Load a dataset or group from an SDF file

    save(filename, group)
        Save an SDF group to a file

    validate(obj)
        Validate an sdf.Group or sdf.Dataset

【讨论】：