code: def __init__(self):
      # micromamba is a tiny version of the mamba package manager and comes with
      # metaflow specific performance enhancements.
  
      # METAFLOW_HOME might not be writable but METAFLOW_TOKEN_HOME might be.
      if os.environ.get("METAFLOW_TOKEN_HOME"):
          _home = os.environ.get("METAFLOW_TOKEN_HOME")
      else:
          _home = os.environ.get("METAFLOW_HOME", "~/.metaflowconfig")
      _path_to_hidden_micromamba = os.path.join(
          os.path.expanduser(_home),
          "micromamba",
      )
      self.bin = (
          which(
              os.environ.get("METAFLOW_PATH_TO_MICROMAMBA")
              or "micromamba"
          )
          or which("./micromamba")  # to support remote execution
          or which("./bin/micromamba")
          or which(
              os.path.join(_path_to_hidden_micromamba, "bin/micromamba")
          )
      )
      if self.bin is None:
          # Install Micromamba on the fly.
          # TODO: Make this optional at some point.
          _install_micromamba(_path_to_hidden_micromamba)
          self.bin = which(
              os.path.join(_path_to_hidden_micromamba, "bin/micromamba")
          )
  
      if self.bin is None:
          msg = "No installation for *Micromamba* found.\n"
          msg += "Visit https://mamba.readthedocs.io/en/latest/micromamba-installation.html for installation instructions."
          raise MetaflowException(msg)
  
imports: import json
  import os
  import subprocess
  import tempfile
  from metaflow.exception import MetaflowException
  from metaflow.util import which
  from .utils import conda_platform
label_desc: Use image node_id 1 to create a new Micromamba object from inherited base classes: object with example: obj = Micromamba()