I wrote a script on spyder3 which calls, through function 'subprocess.call', a bash file and passes (or should do so) a variable. The problem is, not being familiar with bash coding, I don't know how to import/read this variable and (for example) print it or echo it. Here are my lines of code on spyder:
variable='test'
subprocess.call(['./path/bash_file.sh',variable])
And on the bash file:
#!/bin/sh
echo variable
But obviously something is missing, in the bash file at least(?).
either pass the variables to the bash script as arguments or environmental vars
p = subprocess.Popen(
("/bin/bash", "script.sh", arg1, arg2),
...
)
out, err = p.communicate()
custom_env = os.environ.copy() # if you want info from wrapping env
custom_env["foo"] = arg3 # this is just a dictionary
p = subprocess.Popen(
("/bin/bash", "script.sh"),
env=custom_env,
...
)
#!/bin/bash
echo "arg1: $1"
echo "arg2: $2"
echo "env arg: ${foo}"
note that /bin/sh and /bin/bash are different, but practically bash has some extra features which are convenient and it won't really matter here
Bash file:
#!/bin/sh
echo "$1"
Python file:
import subprocess
path_to_bash_file = 'path_to_bash_file'
arg_1 = 10
subprocess.check_call([path_to_bash_file, str(arg_1)])
