PyGVisuals/start_example.py at python-3 · Impelon/PyGVisuals · GitHub

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importos
importsys

"""
Script to execute example-files from outside the pygvisuals-package
"""


defhas_main_loop(f):
"""
 Simple test to see if a py-file has a method called 'main_loop'
 """
ifnotf.lower().endswith(".py"):
returnFalse

try:
descriptor=open(f)
except:
returnFalse
try:
whileTrue:
try:
line=descriptor.readline()
except:
line=None
ifnotline:
break
ifline.startswith("def main_loop():"):
descriptor.close()
returnTrue
descriptor.close()
returnFalse
except:
descriptor.close()
returnFalse

### Scan Directory ###

example_directories= [os.path.join(os.path.split(__file__)[0], "examples")]

print("Searching in: "+", ".join(example_directories))

examples= []

forpathinexample_directories:
forroot, dirs, filesinos.walk(path):
forfinfiles:
ifhas_main_loop(os.path.join(root, f)):
examples.append(os.path.join(root, f))

print("List of executable examples:")
foreinrange(len(examples)):
print(str(e) +":", examples[e])

### Handle User-Input ###

print("")
print("Choose an example to execute with its index! (type 'exit' to exit)")

index=None
whileindex==None:
userinput=str(input("index: "))
ifuserinput.lower() =="exit":
sys.exit()
break
try:
index=int(userinput)
ifindex>=len(examples) orindex<0:
print("Could not find example of index", index)
index=None
except:
print("Invalid index!")
index=None
print("Executing:", examples[index])

try:
importimportlib.util
spec=importlib.util.spec_from_file_location(os.path.split(examples[index])[1], examples[index])
module=importlib.util.module_from_spec(spec)
spec.loader.exec_module(module)
exceptExceptionasex:
__import__(examples[index].replace(os.sep, "."))