This function will snap all points in a shapefile to a line file.

snapPoint.py

import pandas as pd
import geopandas as gpd

def main(ptDF, lnDF):
	# handle null geometries in point DF
    ptDF = ptDF[~ptDF.geometry.isnull()]
    # handle crs issues if geographic
    ptDF.to_crs({'init': u'epsg:5070'}, inplace=True)
    lnDF.to_crs({'init': u'epsg:5070'}, inplace=True)          
    shplyLineString = lnDF.ix[0].geometry         
    out = gpd.GeoDataFrame()
    for idx, row in ptDF.iterrows():
        shplyPoint = row.geometry
        #nearest distance from point to line
        dist = shplyLineString.distance(shplyPoint)
        #the point on the road where the point should snap
        shplySnapPoint = shplyLineString.interpolate(shplyLineString.project(shplyPoint))
        tbl = pd.DataFrame([row.tolist()[:-1]], columns=ptDF.columns.tolist()[:-1])
        pt = gpd.GeoDataFrame(tbl,geometry=[shplySnapPoint])
        pt.crs = {'init': u'epsg:5070'}
        out = pd.concat([out,pt])
    out.to_file(pt_file[:-4] + '_snapped.shp')    
    out2 = out.copy()
    out2.to_crs({'init': u'epsg:4326'})
    out2.to_file(pt_file[:-4] + '_snapped_crs.shp') 

There is only the capacity for one line currently..more to come