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scripts.py

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# Copyright (c) Microsoft Corporation. All rights reserved.

# Licensed under the MIT License.

import re

import os

import json

import sys

import imp

def check_for_ipython():

if int(sys.version[0]) >= 3:

try:

from IPython import get_ipython

return not get_ipython() == None

except ImportError:

pass

return False

def execute_script(file, replace_dict=dict([])):

from IPython import get_ipython

regex = (

re.compile("|".join(replace_dict.keys()))

if len(replace_dict.keys()) > 0

else None

)

# Open the file. Read all lines into a string

contents = ""

with open(file, "r") as fp:

for line in fp:

# Replace the key value pairs

contents += (

line

if regex == None

else regex.sub(lambda m: replace_dict[m.group()], line)

)

# Execute this script as a cell

result = get_ipython().run_cell(contents)

return result.success

def execute_code(code):

# Execute this script as a cell

result = get_ipython().run_cell(code)

return result

def get_variables(capsys):

path = os.path.dirname(os.path.abspath(__file__))

file = os.path.abspath(os.path.join(path, "./getJupyterVariableList.py"))

if execute_script(file):

read_out = capsys.readouterr()

return json.loads(read_out.out)

else:

raise Exception("Getting variables failed.")

def find_variable_json(varList, varName):

for sub in varList:

if sub["name"] == varName:

return sub

def get_variable_value(variables, name, capsys):

varJson = find_variable_json(variables, name)

path = os.path.dirname(os.path.abspath(__file__))

file = os.path.abspath(os.path.join(path, "./getJupyterVariableValue.py"))

keys = dict([("_VSCode_JupyterTestValue", json.dumps(varJson))])

if execute_script(file, keys):

read_out = capsys.readouterr()

return json.loads(read_out.out)["value"]

else:

raise Exception("Getting variable value failed.")

def get_data_frame_info(variables, name, capsys):

varJson = find_variable_json(variables, name)

path = os.path.dirname(os.path.abspath(__file__))

syspath = os.path.abspath(

os.path.join(path, "../../vscode_datascience_helpers/dataframes")

)

syscode = 'import sys\nsys.path.append("{0}")'.format(syspath.replace("\\", "\\\\"))

importcode = "import vscodeGetDataFrameInfo\nprint(vscodeGetDataFrameInfo._VSCODE_getDataFrameInfo({0}))".format(

name

)

result = execute_code(syscode)

if not result.success:

result.raise_error()

result = execute_code(importcode)

if result.success:

read_out = capsys.readouterr()

info = json.loads(read_out.out[0:-1])

varJson.update(info)

return varJson

else:

result.raise_error()

def get_data_frame_rows(varJson, start, end, capsys):

path = os.path.dirname(os.path.abspath(__file__))

syspath = os.path.abspath(

os.path.join(path, "../../vscode_datascience_helpers/dataframes")

)

syscode = 'import sys\nsys.path.append("{0}")'.format(syspath.replace("\\", "\\\\"))

importcode = "import vscodeGetDataFrameRows\nprint(vscodeGetDataFrameRows._VSCODE_getDataFrameRows({0}, {1}, {2}))".format(

varJson["name"], start, end

)

result = execute_code(syscode)

if not result.success:

result.raise_error()

result = execute_code(importcode)

if result.success:

read_out = capsys.readouterr()

return json.loads(read_out.out[0:-1])

else:

result.raise_error()