coordinate system - Script to save lots of shapefiles into different CRS in QGIS

I have a lot of shapefiles that I need to save in a different CRS... is it possible to automate this process with a script in QGIS?

Answer

For shapefiles already loaded into QGIS, you can use the following code in the Python Console:

import processing

# Set path to where you want the shapefiles saved
shapes_result = "path/to/results//" 
# Set crs
crs = 'EPSG:4326'  


shapefiles = QgsMapLayerRegistry.instance().mapLayers().values() 
for shapes in shapefiles:
        processing.runalg("qgis:reprojectlayer", shapes, crs, shapes_result + shapes.name())

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I used QGIS 2.12.3-Lyon with Processing plugin version 2.12.2.

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Edit:

The following code which you can run as a script reprojects the loaded layers in QGIS and saves them in their original folder. Note that they are prefixed with "New_" as you won't be able to overwrite the shapefiles (since they're already in use):

##Reproject shapefiles=name

import os, processing
from qgis.core import QgsMapLayerRegistry

# Set crs
crs = 'EPSG:4326'  

shapefiles = QgsMapLayerRegistry.instance().mapLayers().values() 
for shapes in shapefiles:

    myfilepath = shapes.dataProvider().dataSourceUri()
    (myDirectory,nameFile) = os.path.split(myfilepath)
    processing.runalg("qgis:reprojectlayer", shapes, crs, myDirectory + "/" + "New_" + shapes.name())