Google Colab - Execute a bash command from python string

Question

I wrote an code which contain

str1 = "word1"
str2 = "word2"
str3 = "word3"

var1 = str("./e " + str1 + "/" + str2 + "/" + str3)

#NOW I NEED TO RUN A BASH COMMAND:

!cd bin && var1

#LIKE THIS: "cd bin && ./e str1/str2/str3"

How can I do this? Please help me, Thanks!

Utpal Dutt · Accepted Answer · 2021-02-12 15:55:59Z

2

$var1 should work

str1 = "word1"
str2 = "word2"
str3 = "word3"

var1 = str("./e " + str1 + "/" + str2 + "/" + str3)

#NOW I NEED TO RUN A BASH COMMAND:

!cd bin && $var1

!echo $var1 #echos./e word1/word2/word3 whish you desired

edited Feb 12, 2021 at 15:55

answered Feb 12, 2021 at 15:48

Utpal Dutt

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2 Comments

Moga Onamil Over a year ago

i get this error : /bin/bash: ./e: No such file or directory

Utpal Dutt Over a year ago

final command is cd bin && ./e word1/word2/word3 if this is giving an error then there is problem with command are you sure you want to execute that ?this example just shows how you can you python variable to execute shell command in colab

SURYA TEJA · Accepted Answer · 2021-02-12 15:51:54Z

0

You can use os module

 import os
 str1 = "word1"
 str2 = "word2"
 str3 = "word3"

 var1 = str("./e " + str1 + "/" + str2 + "/" + str3)

 os.system(f"!cd bin && {var1}")

answered Feb 12, 2021 at 15:51

SURYA TEJA

2043 silver badges8 bronze badges

1 Comment

Moga Onamil Over a year ago

that's working but i don't see the output of my ./e file

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