pypen.__main__.cli() - Code Metrics - Inspection of "Init Command and better README" - Canvim/PyPen - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#6)

by Erik

created 2020-07-19 19:42 UTC

pypen.main.cli() B

↳ Parent: pypen.__main__

Complexity

Conditions

Size

Total Lines	30
Code Lines	24

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	24
dl	0
loc	30
rs	7.904
c	0
b	0
f	0
cc	7
nop	0

import sys
import argparse
import time
from os import path, getcwd

from importlib import util as import_util

from pypen.settings import settings
import pygame

_argument_parser = argparse.ArgumentParser()

def space_print(msg=""):
    print()
    print(msg)
    print()

def print_help(msg=""):
    if msg:
        space_print(msg)

    _argument_parser.print_help(sys.stderr)
    sys.exit(0)

def cli():
    global _argument_parser
    try:
        _argument_parser = argparse.ArgumentParser(description="The PyPen CLI for managing PyPen Sketches", prog="pypen")
        _argument_parser.add_argument(
            "-i",
            "--init",
            action="store_true",
            help="Flag to create a new PyPen sketch which imports pypen and contains default functions.")

        _argument_parser.add_argument("filename", nargs="?", help="The name/path of your PyPen Sketch.", default="")
        _argument_parser.add_argument("-f", "--fullscreen", action="store_true")
        _argument_parser.add_argument("--timeout", help="Timeout in seconds. Window will close once done.", type=float, required=False, default=0.0)

        arguments = _argument_parser.parse_args()

        if len(sys.argv) == 1:
            print_help("It seems like you are running the pypen command without any arguments.\nHere is some help:")

        if not arguments.init and not arguments.filename:
            print_help("PyPen needs a path to a sketch in order to run it!\nPlease provide a path with 'pypen <path_to_sketch>'\nor run 'pypen --init <path_to_new_sketch>' to create a new one!")

        if arguments.init:
            path_to_new_sketch = arguments.filename if arguments.filename else settings.default_pypen_name
            init(path_to_new_sketch)

        main(arguments)
    except argparse.ArgumentError as error:
        print(str(error))
        sys.exit(1)


def init(path_to_new_file):
    if path.splitext(path_to_new_file)[1] != ".py":
        path_to_new_file += ".py"

    pypen_path = path.join(getcwd(), path_to_new_file)
    template = ""

    try:
        with open(path.join(path.realpath(__file__), "..", "pypen_template.py"), "r") as template_file:
            template = template_file.read()
    except EnvironmentError:
        # In case PyPen is installed in a directory that doesn't have read access,
        # it uses the below template instead of reading the template file
        template = """from pypen import *


def start():
    settings.fps = 60


def update():
    clear()
    rectangle(20, 20, 300, 400, "red")
"""

    try:
        with open(pypen_path, "w") as new_file:
            new_file.writelines(template)
    except EnvironmentError:
        space_print("Could not create file {}\nDo you have the right permissions?".format(pypen_path))
        sys.exit(1)

    space_print("'{0}' has been created!\nRun it using 'pypen {0}'".format(path_to_new_file))
    sys.exit(0)


def main(arguments):
    if not arguments.init:
        try:
            file_path = path.join(getcwd(), arguments.filename)
            spec = import_util.spec_from_file_location("", file_path)
            user_sketch = import_util.module_from_spec(spec)
            spec.loader.exec_module(user_sketch)
        except FileNotFoundError:
            print()
            print(f"Hmm, PyPen can't find '{arguments.filename}'.")
            print("Are you sure that's the right path?")
            print()
            sys.exit(1)

    try:
        user_sketch.TIME

        user_sketch.T
        user_sketch.rectangle
        user_sketch.PI
    except AttributeError:
        print()
        print(f"It seems like you're not importing PyPen to your sketch '{arguments.filename}'")
        print("Import it by writing 'from pypen import *' at the very top!")
        print()
        sys.exit(1)

    try:
        user_sketch.start
    except AttributeError:
        settings._user_has_start = False

    try:
        user_sketch.update
    except AttributeError:
        settings._user_has_update = False

    if not settings._user_has_start and not settings._user_has_update:
        print()
        print(
            f"Your PyPen sketch '{arguments.filename}' appears to have neither a start() nor an update() function.")
        print("Try to add at least one of those and run again!")
        print()
        sys.exit(1)

    def start():
        user_sketch.start()

        update()

    def update(passed_time=0, delta_time=0, frame_count=0):
        user_sketch.TIME = user_sketch.T = passed_time

        user_sketch.DELTA_TIME = user_sketch.DT = delta_time
        user_sketch.FRAME = user_sketch.F = frame_count

        user_sketch.update()

    pygame.display.set_mode((settings.width, settings.height), pygame.SRCALPHA)

    pygame.init()
    pygame.display.set_caption(f"PyPen | {arguments.filename}")

    if settings._user_has_start:
        start()

    pygame.display.set_mode((settings.width, settings.height), pygame.SRCALPHA)
    pygame.display.flip()
    clock = pygame.time.Clock()

    is_running = True
    passed_time = frame_count = 0

    while is_running:
        # Handle events
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                is_running = False

            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_ESCAPE:
                    is_running = False

        delta_time = clock.tick(settings.fps if settings.fps > 0 else 1)/1000
        passed_time += delta_time
        frame_count += 1

        if arguments.timeout > 0:
            if passed_time > arguments.timeout:
                is_running = False

        if settings._user_has_update:
            update(passed_time, delta_time, frame_count)

        pygame.display.flip()


if __name__ == "__main__":
    cli()


1			import sys
2			import argparse
3			import time
4			from os import path, getcwd
5
6			from importlib import util as import_util
7
8			from pypen.settings import settings
9			import pygame
10
11			_argument_parser = argparse.ArgumentParser()
12
13			def space_print(msg=""):
14			print()
15			print(msg)
16			print()
17
18			def print_help(msg=""):
19			if msg:
20			space_print(msg)
21
22			_argument_parser.print_help(sys.stderr)
23			sys.exit(0)
24
25			def cli():
26			global _argument_parser
27			try:
28			_argument_parser = argparse.ArgumentParser(description="The PyPen CLI for managing PyPen Sketches", prog="pypen")
29			_argument_parser.add_argument(
30			"-i",
31			"--init",
32			action="store_true",
33			help="Flag to create a new PyPen sketch which imports pypen and contains default functions.")
34
35			_argument_parser.add_argument("filename", nargs="?", help="The name/path of your PyPen Sketch.", default="")
36			_argument_parser.add_argument("-f", "--fullscreen", action="store_true")
37			_argument_parser.add_argument("--timeout", help="Timeout in seconds. Window will close once done.", type=float, required=False, default=0.0)
38
39			arguments = _argument_parser.parse_args()
40
41			if len(sys.argv) == 1:
42			print_help("It seems like you are running the pypen command without any arguments.\nHere is some help:")
43
44			if not arguments.init and not arguments.filename:
45			print_help("PyPen needs a path to a sketch in order to run it!\nPlease provide a path with 'pypen <path_to_sketch>'\nor run 'pypen --init <path_to_new_sketch>' to create a new one!")
46
47			if arguments.init:
48			path_to_new_sketch = arguments.filename if arguments.filename else settings.default_pypen_name
49			init(path_to_new_sketch)
50
51			main(arguments)
52			except argparse.ArgumentError as error:
53			print(str(error))
54			sys.exit(1)
55
56
57			def init(path_to_new_file):
58			if path.splitext(path_to_new_file)[1] != ".py":
59			path_to_new_file += ".py"
60
61			pypen_path = path.join(getcwd(), path_to_new_file)
62			template = ""
63
64			try:
65			with open(path.join(path.realpath(__file__), "..", "pypen_template.py"), "r") as template_file:
66			template = template_file.read()
67			except EnvironmentError:
68			# In case PyPen is installed in a directory that doesn't have read access,
69			# it uses the below template instead of reading the template file
70			template = """from pypen import *
71
72
73			def start():
74			settings.fps = 60
75
76
77			def update():
78			clear()
79			rectangle(20, 20, 300, 400, "red")
80			"""
81
82			try:
83			with open(pypen_path, "w") as new_file:
84			new_file.writelines(template)
85			except EnvironmentError:
86			space_print("Could not create file {}\nDo you have the right permissions?".format(pypen_path))
87			sys.exit(1)
88
89			space_print("'{0}' has been created!\nRun it using 'pypen {0}'".format(path_to_new_file))
90			sys.exit(0)
91
92
93			def main(arguments):
94			if not arguments.init:
95			try:
96			file_path = path.join(getcwd(), arguments.filename)
97			spec = import_util.spec_from_file_location("", file_path)
98			user_sketch = import_util.module_from_spec(spec)
99			spec.loader.exec_module(user_sketch)
100			except FileNotFoundError:
101			print()
102			print(f"Hmm, PyPen can't find '{arguments.filename}'.")
103			print("Are you sure that's the right path?")
104			print()
105			sys.exit(1)
106
107			try:
108			user_sketch.TIME
			0 ignored issues – show introduced 2020-07-19 19:43 UTC by Report Bug Copy Issue Report The variable `user_sketch` does not seem to be defined in case `BooleanNotNode` on line `94` is `False`. Are you sure this can never be the case? Loading history...
109			user_sketch.T
110			user_sketch.rectangle
111			user_sketch.PI
112			except AttributeError:
113			print()
114			print(f"It seems like you're not importing PyPen to your sketch '{arguments.filename}'")
115			print("Import it by writing 'from pypen import *' at the very top!")
116			print()
117			sys.exit(1)
118
119			try:
120			user_sketch.start
121			except AttributeError:
122			settings._user_has_start = False
123
124			try:
125			user_sketch.update
126			except AttributeError:
127			settings._user_has_update = False
128
129			if not settings._user_has_start and not settings._user_has_update:
130			print()
131			print(
132			f"Your PyPen sketch '{arguments.filename}' appears to have neither a start() nor an update() function.")
133			print("Try to add at least one of those and run again!")
134			print()
135			sys.exit(1)
136
137			def start():
138			user_sketch.start()
			0 ignored issues – show introduced 2020-07-19 19:43 UTC by Report Bug Copy Issue Report The variable `user_sketch` does not seem to be defined in case `BooleanNotNode` on line `94` is `False`. Are you sure this can never be the case? Loading history...
139			update()
140
141			def update(passed_time=0, delta_time=0, frame_count=0):
142			user_sketch.TIME = user_sketch.T = passed_time
			0 ignored issues – show introduced 2020-07-19 19:43 UTC by Report Bug Copy Issue Report The variable `user_sketch` does not seem to be defined in case `BooleanNotNode` on line `94` is `False`. Are you sure this can never be the case? Loading history...
143			user_sketch.DELTA_TIME = user_sketch.DT = delta_time
144			user_sketch.FRAME = user_sketch.F = frame_count
145
146			user_sketch.update()
147
148			pygame.display.set_mode((settings.width, settings.height), pygame.SRCALPHA)
149
150			pygame.init()
151			pygame.display.set_caption(f"PyPen \| {arguments.filename}")
152
153			if settings._user_has_start:
154			start()
155
156			pygame.display.set_mode((settings.width, settings.height), pygame.SRCALPHA)
157			pygame.display.flip()
158			clock = pygame.time.Clock()
159
160			is_running = True
161			passed_time = frame_count = 0
162
163			while is_running:
164			# Handle events
165			for event in pygame.event.get():
166			if event.type == pygame.QUIT:
167			is_running = False
168
169			if event.type == pygame.KEYDOWN:
170			if event.key == pygame.K_ESCAPE:
171			is_running = False
172
173			delta_time = clock.tick(settings.fps if settings.fps > 0 else 1)/1000
174			passed_time += delta_time
175			frame_count += 1
176
177			if arguments.timeout > 0:
178			if passed_time > arguments.timeout:
179			is_running = False
180
181			if settings._user_has_update:
182			update(passed_time, delta_time, frame_count)
183
184			pygame.display.flip()
185
186
187			if __name__ == "__main__":
188			cli()
189

Canvim / PyPen

Pull Request — master (#6)

pypen.__main__.cli() B

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pypen.main.cli() B