human
Write me a the Python code you requested given the following:
I am working on the file "Seismic_acquisition.ipynb".
The first task is:
Survey object
Can you write Python code for it?
assistant
#Here is the Python code you requested.

class Survey:
    """
    A seismic survey.
    """

    def __init__(self, params):
        
        # Assign the variables from the parameter dict,
        # using dict.items() for Python 3 compatibility.
        for k, v in params.items(): 
            setattr(self, k, v)
          
        # These are just a convenience; we could use the
        # tuples directly, or make objects with attrs.
        self.xmi = self.corner[0]
        self.ymi = self.corner[1]
        
        self.x = self.size[0]
        self.y = self.size[1]
        
        self.SL = self.line_spacing[0]
        self.RL = self.line_spacing[1]
        
        self.si = self.point_spacing[0]
        self.ri = self.point_spacing[1]
        
        self.shiftx = -self.si/2.
        self.shifty = -self.ri/2.
           
    @property
    def lines(self):
        """
        Returns number of (src, rcvr) lines.
        """
        slines = int(self.x/self.SL) + 1
        rlines = int(self.y/self.RL) + 1
        return slines, rlines

    @property
    def points_per_line(self):
        """
        Returns number of (src, rcvr) points per line.
        """
        spoints = int(self.y/self.si) + 2
        rpoints = int(self.x/self.ri) + 2
        return spoints, rpoints
    
    @property
    def src(self):
        s = [Point(self.xmi+line*self.SL, self.ymi+s*self.si)
             for line in range(self.lines[0])
             for s in range(self.points_per_line[0])
             ]
        S = gpd.GeoSeries(s)
        S.crs = from_epsg(26911)
        return S

    @property
    def rcvr(self):
        r = [Point(self.xmi + r*self.ri + self.shiftx, self.ymi + line*self.RL - self.shifty)
             for line in range(self.lines[1])
             for r in range(self.points_per_line[1])
             ]
        R = gpd.GeoSeries(r)
        R.crs = from_epsg(self.epsg)
        return R
    
    @property
    def layout(self):
        """
        Provide a GeoDataFrame of all points,
        labelled as columns and in hierarchical index.
        """
 ...