CODEWITHSUNDEEP
node.jsreactjsnode-sass
Marius
Marius

Reputation: 2008

yarn install failing import sys; print "%s.%s.%s" % sys.version_info[:3] invalid syntax

When doing yarn install i get this error, but no issues one other projects, also used Brew to install node. Note sure what else should i try, any suggestions?

error */node_modules/node-sass: Command failed.
Exit code: 1
Command: node scripts/build.js
Arguments: 
Directory: */node_modules/node-sass
Output:
Building: /opt/homebrew/Cellar/node@14/14.18.1/bin/node */node_modules/node-gyp/bin/node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
gyp info it worked if it ends with ok
gyp verb cli [
gyp verb cli   '/opt/homebrew/Cellar/node@14/14.18.1/bin/node',
gyp verb cli   '*/node_modules/node-gyp/bin/node-gyp.js',
gyp verb cli   'rebuild',
gyp verb cli   '--verbose',
gyp verb cli   '--libsass_ext=',
gyp verb cli   '--libsass_cflags=',
gyp verb cli   '--libsass_ldflags=',
gyp verb cli   '--libsass_library='
gyp verb cli ]
gyp info using [email protected]
gyp info using [email protected] | darwin | arm64
gyp verb command rebuild []
gyp verb command clean []
gyp verb clean removing "build" directory
gyp verb command configure []
gyp verb check python checking for Python executable "/opt/homebrew/opt/[email protected]/bin/python3" in the PATH
gyp verb `which` succeeded /opt/homebrew/opt/[email protected]/bin/python3 /opt/homebrew/opt/[email protected]/bin/python3
gyp ERR! configure error 
gyp ERR! stack Error: Command failed: /opt/homebrew/opt/[email protected]/bin/python3 -c import sys; print "%s.%s.%s" % sys.version_info[:3];
gyp ERR! stack   File "<string>", line 1
gyp ERR! stack     import sys; print "%s.%s.%s" % sys.version_info[:3];
gyp ERR! stack                       ^
gyp ERR! stack SyntaxError: invalid syntax
gyp ERR! stack 
gyp ERR! stack     at ChildProcess.exithandler (child_process.js:383:12)
gyp ERR! stack     at ChildProcess.emit (events.js:400:28)
gyp ERR! stack     at maybeClose (internal/child_process.js:1058:16)
gyp ERR! stack     at Socket.<anonymous> (internal/child_process.js:443:11)
gyp ERR! stack     at Socket.emit (events.js:400:28)
gyp ERR! stack     at Pipe.<anonymous> (net.js:686:12)
gyp ERR! System Darwin 21.1.0
gyp ERR! command "/opt/homebrew/Cellar/node@14/14.18.1/bin/node" "*/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd */node_modules/node-sass
gyp ERR! node -v v14.18.1

Upvotes: 36

Views: 54474

Answers (16)

Marius
Marius

Reputation: 2008

Fixed by upping the node-sass version to the correct version based on my Node installation as documented here: https://npmjs.com/package/node-sass

Upvotes: 18

Vahid
Vahid

Reputation: 7561

In my mac, I had this problem and when I ran python2 command, I had this:

> python2
pyenv: python2: command not found

The `python2' command exists in these Python versions:
  2.7.18

Note: See 'pyenv help global' for tips on allowing both
      python2 and python3 to be found.

All I needed was pyenv global 2.7.18 to add python2 to the global.

Upvotes: 0

Frankie
Frankie

Reputation: 121

The reason for the error is executing a Python2 program with Python3. The syntax of print is different between Python2 and Python3.

print 'some text' # python 2.x
print('some text') # python 3

That is to say, the node-gyp package that node-sass depends on is still written in Python2.

The solution is simple:

  1. Prioritize upgrading to Dart Sass (aka sass) as Node Sass is deprecated. 👉 LibSass is Deprecated
  2. Install Python2, add the path of Python2 to .npmrc or .yarnrc.

Regarding the second point, take macOS as an example:

$ which python
/Users/frankie/.pyenv/shims/python

$ npm config set python /Users/frankie/.pyenv/shims/python

Upvotes: 10

Gert Rikkers
Gert Rikkers

Reputation: 106

For me the solution was to delete the file 'package-lock.json' and then run 'npm install'.

The answer "For me it was enough to remove yarn.lock and run yarn install again." from FedericoCapaldo pointed me to the right direction.

Upvotes: 1

Gander
Gander

Reputation: 2001

At the time of writing this answer, the current version of Node was 18 and the recommended version was 16. When trying to install a slightly older project, I was getting a request to install node-gyp. The specified error has appeared. I followed bdn's suggestion and installed 14. Now, not only that it didn't require node-gyp, it also installed smoothly.

nvm install 14
nvm exec 14 npm install

Upvotes: 3

thinhnoz1
thinhnoz1

Reputation: 41

gyp ERR! stack   
import sys; print "%s.%s.%s" % sys.version_info[:3];
Invalid syntax

This error occur due to python3 is used for executing the python2-only command line. I have tried executing the command with python2 and it work fine.

So the solution is temporarily removing python3 and replace python3's path with python2's path in your windows Environment Variables. Then run the npm line again!

This work for me so I hope it help you guys too

Upvotes: 4

EvgeniyRRU
EvgeniyRRU

Reputation: 531

Just abandon node-sass, because it deprecated. Instead I advise you to use sass npm package.

Upvotes: 0

Fed
Fed

Reputation: 1885

For me it was enough to remove yarn.lock and run yarn install again.

Upvotes: 2

luigi7up
luigi7up

Reputation: 5962

I'm getting this error while building the Vue.js and adding the Buefy to it:

File "<string>", line 1
gyp ERR! stack     import sys; print "%s.%s.%s" % sys.version_info[:3];

It seems that in my case the problem was that the version of node was not compatible with the version of node-sass in the package.json.

So the solution is to find a node-sass version compatible with the version of node installed on your machine.

Since I'm working on a fresh project to fix I could simply update my node the the last version and then use the node-sass compatible with it. Check this list to find out what's compatible

In my case this I did the following

1 | I updated the NODE to the last version (v16 in my case)

npm cache clean -f
npm install -g n
n stable

2 | I changed my node-sass version to the one compatible with node v16 in the package.json which is "node-sass": "~6.0",

Now, if I run yarn install it works like a charm

Upvotes: 6

user17811993
user17811993

Reputation: 19

There is a bug in print "%s.%s.%s" % sys.version_info[:3]; parentheses missed, it should be print("%s.%s.%s" % sys.version_info[:3]);

Upvotes: 1

Wipster
Wipster

Reputation: 1570

I've had the same problem on the same hardware. Node 17 installed via brew. I checked https://www.npmjs.com/package/node-sass and it says node 17 required node-sass 7.0+. I set node-sass to ^7.0.0 in my package.json which solved the problem for me.

Upvotes: 1

Huy Jayden Nguyen
Huy Jayden Nguyen

Reputation: 55

My node-sass version in package.json is 6.0.0 and my node version is 16.13.1. As the node-sass documentations, the node-sass 6.0+ requires Node16 but I still get stuck with the same problem when using the command npm install or yarn

Then, I tried to downgrade to Node14, it worked correctly (??!!). I don't know why and can not find any solutions or explanations on google so far.

Upvotes: 1

Maxime Huran
Maxime Huran

Reputation: 31

I removed my brew setup :

brew remove yarn
brew remove node
brew remove node@14

Then reinstalled everything without brew, this link helped me a lot : https://www.jurnalanas.com/node-js-mac-m1/

Finally reinstalled yarn :

rm -rf ~/.yarn
curl -o- -L https://yarnpkg.com/install.sh | bash

Upvotes: 3

Rafał Jeżewski
Rafał Jeżewski

Reputation: 11

I resolved similar issue by changing node-sass version in package.json to "node-sass": "4.14.1".

My "node --version" = "v14.18.0" and "npm --version" = "6.14.15"

Upvotes: 1

bakalov
bakalov

Reputation: 91

After updating MacOS to Monterey, this problem appeared. Simply reinstall and relink node version, and everything fixed.

Changed version to node@14 and fixed it. What i've done:

brew install node@14
brew unlink node
brew link --overwrite node@14

Here is an article with commands I've used https://medium.com/@georgeenathomas/3-step-process-to-downgrade-node-version-using-homebrew-bc0b0a72ae27

Upvotes: 8

rndrfero
rndrfero

Reputation: 322

Fixed (mac os x catalina) by downgrading node@14.

Upvotes: 2

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