import subprocess

def bash_command(cmd):
    p1=subprocess.call(cmd, shell=True, executable=r'C:Program FilesGitbinbash.exe',stdout=subprocess.PIPE,
           stderr=subprocess.STDOUT)

    return p1

path ='cd ~/PycharmProjects/10June'

cmd = 'convert -density 300 OCR1.pdf -depth 8 -strip -background white -alpha off OCR1_Ouput.tiff'
print(path+' '+cmd)
print(bash_command(path+' '+cmd))