Ride: get picture Base64

python Script ：

import base64

filepath=r'D:\ Photo gallery \0\7102528551.jpg'
f=open(filepath, 'rb')
print(f)
ls_f = base64.b64encode(f.read()).decode("utf8")  #  Read file contents , Convert to base64 code 
print(ls_f)
f.close()

according to python Script steps , stay RIDE Write use case steps in ：

base64.b64encode(open('${filepath}','rb').read()).decode('utf8')

stay External Resources Newly added keyword, It is convenient to call... In test cases

*** Settings ***
Library           Selenium2Library
Library           Collections

*** Keywords ***
 Picture conversion base64
    [Arguments]    ${filepath}
    ${pic_base64}    Evaluate    base64.b64encode(open('${filepath}','rb').read()).decode('utf8')    base64
    #log    ${pic_base64}
    Evaluate    open('${filepath}','rb').close()
    [Return]    ${pic_base64}