Week 12 - Try Catch

# syntax error 1 print('I am missing a quote here)

SyntaxError: EOL while scanning string literal (<ipython-input-1-c1712e68cd5a>, line 3)

# syntax error 2 max(1, 3, 5, 8

SyntaxError: unexpected EOF while parsing (<ipython-input-2-5602d7a5f0eb>, line 3)

# no syntax error my_tuple = 1, 2, 3

tuple_1 = (1, 2, 3)

my_tuple == tuple_1

# syntax error 3 my_list = [1, 2 3]

SyntaxError: invalid syntax (<ipython-input-8-9a8d5aa3fb80>, line 3)

# Exception 1 a = 10 b

NameError: name 'b' is not defined

# Exception 2 1 + 'two'

TypeError: unsupported operand type(s) for +: 'int' and 'str'

# Exception 3 num = int(input('Enter a number: ')) print('<3' * num)

ValueError: invalid literal for int() with base 10: 'two'

# i am using incorrect type # first operand is int # second operand is string 1 + 'two'

TypeError: unsupported operand type(s) for +: 'int' and 'str'

# correct type # wrong value int('20') # this is ok int('two hundred')

ValueError: invalid literal for int() with base 10: 'two hundred'

assert 1 == 2

AssertionError:

my_list = [1, 2, 3] my_list[3]

IndexError: list index out of range

# heart.py # the exclamation syntax is for executing linux commands, but this is not interactive # if the program asks for input, you can't give it interactively !python heart.py

Enter a number: ^C
Traceback (most recent call last):
  File "heart.py", line 2, in <module>
    num = int(input('Enter a number: '))
KeyboardInterrupt

%lsmagic

%pwd

%matplotlib inline

%matplotlib --list

Available matplotlib backends: ['tk', 'gtk', 'gtk3', 'wx', 'qt4', 'qt5', 'qt', 'osx', 'nbagg', 'notebook', 'agg', 'svg', 'pdf', 'ps', 'inline', 'ipympl', 'widget']

import math math.pi

%precision 3

math.pi

%run heart.py

<3<3<3<3<3<3<3<3<3<3

%time sum(range(10000000))

CPU times: user 203 ms, sys: 0 ns, total: 203 ms
Wall time: 202 ms

%who

a	 math	 my_list	 my_tuple	 num	 tuple_1

my_list

%reset

Once deleted, variables cannot be recovered. Proceed (y/[n])? y

%run heart.py

ValueError: invalid literal for int() with base 10: 'ten'

%run heart.py

Sorry, I don't understand your input.

NameError: name 'num' is not defined

%run heart.py

Sorry, I don't understand your input.
Sorry, I don't understand your input.

%run heart.py

Sorry, I don't understand your input.

%run heart.py

Sorry, I don't understand your input.
Sorry, I don't understand your input.
<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

%%writefile demo.txt Hello There I am awesome

Writing demo.txt

!pip


Usage:   
  pip <command> [options]

Commands:
  install                     Install packages.
  download                    Download packages.
  uninstall                   Uninstall packages.
  freeze                      Output installed packages in requirements format.
  list                        List installed packages.
  show                        Show information about installed packages.
  check                       Verify installed packages have compatible dependencies.
  config                      Manage local and global configuration.
  search                      Search PyPI for packages.
  wheel                       Build wheels from your requirements.
  hash                        Compute hashes of package archives.
  completion                  A helper command used for command completion.
  debug                       Show information useful for debugging.
  help                        Show help for commands.

General Options:
  -h, --help                  Show help.
  --isolated                  Run pip in an isolated mode, ignoring
                              environment variables and user configuration.
  -v, --verbose               Give more output. Option is additive, and can be
                              used up to 3 times.
  -V, --version               Show version and exit.
  -q, --quiet                 Give less output. Option is additive, and can be
                              used up to 3 times (corresponding to WARNING,
                              ERROR, and CRITICAL logging levels).
  --log <path>                Path to a verbose appending log.
  --proxy <proxy>             Specify a proxy in the form
                              [user:passwd@]proxy.server:port.
  --retries <retries>         Maximum number of retries each connection should
                              attempt (default 5 times).
  --timeout <sec>             Set the socket timeout (default 15 seconds).
  --exists-action <action>    Default action when a path already exists:
                              (s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bort.
  --trusted-host <hostname>   Mark this host as trusted, even though it does
                              not have valid or any HTTPS.
  --cert <path>               Path to alternate CA bundle.
  --client-cert <path>        Path to SSL client certificate, a single file
                              containing the private key and the certificate
                              in PEM format.
  --cache-dir <dir>           Store the cache data in <dir>.
  --no-cache-dir              Disable the cache.
  --disable-pip-version-check
                              Don't periodically check PyPI to determine
                              whether a new version of pip is available for
                              download. Implied with --no-index.
  --no-color                  Suppress colored output

import emoji

ModuleNotFoundError: No module named 'emoji'

!pip install emoji

Collecting emoji
  Downloading emoji-1.2.0-py3-none-any.whl (131 kB)
     |████████████████████████████████| 131 kB 26.8 MB/s 
Installing collected packages: emoji
Successfully installed emoji-1.2.0
WARNING: You are using pip version 20.1.1; however, version 21.0.1 is available.
You should consider upgrading via the '/root/venv/bin/python -m pip install --upgrade pip' command.

from emoji import emojize

emojize(":thumbs_up:")

emojize(":red_heart:")

emojize(":broken_heart:")

emojize(":alien:")