import jinja2
from jinja2 import Environment, meta
 
# Define the template string
template_string = "Found the BGP established with PEER IP {{peer_ip}} {{hostname}}"
 
# Create a Jinja2 Environment
env = Environment()
 
# Parse the template string to extract variable names
parsed_content = env.parse(template_string)
variable_names = meta.find_undeclared_variables(parsed_content)
 
# Print the extracted variable names
rca_format_values={'peer_ip':'10.0.0.4','hostname':'everest'}
probable_cause = Environment().from_string(template_string).render(**rca_format_values)
print("probable cause - ",probable_cause)

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