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Add more sections.
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  • 6_strings
  • 7_string_formatting
  • 8_user_input
  • 9_booleans
  • 20_unit_testing

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    +1309
    -152
    lines changed

    ‎course_contents/12_browser_automation_selenium/lectures/10_implicit_and_explicit_waits/slide.html

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    <!DOCTYPE html>
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    <html>
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    <head>
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    <meta charset="utf-8" />
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    <meta
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    name="viewport"
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    content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"
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    />
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    <title>Code</title>
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    <link rel="stylesheet" href="../css/reset.css" />
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    <link rel="stylesheet" href="../css/reveal.css" />
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    <link rel="stylesheet" href="../css/theme/teclado.css" />
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    <!-- Theme used for syntax highlighting of code -->
    17+
    <link rel="stylesheet" href="../lib/css/monokai.css" />
    18+
    19+
    <!-- Printing and PDF exports -->
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    <script>
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    var link = document.createElement("link");
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    link.rel = "stylesheet";
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    link.type = "text/css";
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    link.href = window.location.search.match(/print-pdf/gi)
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    ? "../css/print/pdf.css"
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    : "../css/print/paper.css";
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    document.getElementsByTagName("head")[0].appendChild(link);
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    </script>
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    </head>
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    <body>
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    <div class="reveal">
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    <img src="../img/logo.svg" class="logo" />
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    <div class="blog-link">https://blog.tecla.do</div>
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    <div class="slides">
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    <!-- Each slide is a `section`. Duplicate the whole thing and modify the code and `data-line-numbers` for highlighting. -->
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    <section data-transition="none">
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    <h1>Explicit waits</h1>
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    <pre><code data-trim data-line-numbers>
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    import time
    40+
    41+
    time.sleep(5) # 5 seconds
    42+
    </code></pre>
    43+
    </section>
    44+
    <!-- End duplication -->
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    46+
    <section data-transition="slide-in none">
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    <h1>Explicit waits</h1>
    48+
    <pre><code data-trim data-line-numbers="1-3">
    49+
    from selenium.webdriver.common.by import By
    50+
    from selenium.webdriver.support import expected_conditions
    51+
    from selenium.webdriver.support.wait import WebDriverWait
    52+
    53+
    WebDriverWait(self.browser, 10).until(
    54+
    expected_conditions.presence_of_element_located(
    55+
    (By.CSS_SELECTOR, QuotesPageLocators.TAG_DROPDOWN_VALUE_OPTION)
    56+
    )
    57+
    )
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    </code></pre>
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    </section>
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    61+
    <section data-transition="none">
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    <h1>Explicit waits</h1>
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    <pre><code data-trim data-line-numbers="5">
    64+
    from selenium.webdriver.common.by import By
    65+
    from selenium.webdriver.support import expected_conditions
    66+
    from selenium.webdriver.support.wait import WebDriverWait
    67+
    68+
    WebDriverWait(self.browser, 10).until(
    69+
    expected_conditions.presence_of_element_located(
    70+
    (By.CSS_SELECTOR, QuotesPageLocators.TAG_DROPDOWN_VALUE_OPTION)
    71+
    )
    72+
    )
    73+
    </code></pre>
    74+
    </section>
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    76+
    <section data-transition="none">
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    <h1>Explicit waits</h1>
    78+
    <pre><code data-trim data-line-numbers="6">
    79+
    from selenium.webdriver.common.by import By
    80+
    from selenium.webdriver.support import expected_conditions
    81+
    from selenium.webdriver.support.wait import WebDriverWait
    82+
    83+
    WebDriverWait(self.browser, 10).until(
    84+
    expected_conditions.presence_of_element_located(
    85+
    (By.CSS_SELECTOR, QuotesPageLocators.TAG_DROPDOWN_VALUE_OPTION)
    86+
    )
    87+
    )
    88+
    </code></pre>
    89+
    </section>
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    91+
    <section data-transition="none">
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    <h1>Explicit waits</h1>
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    <pre><code data-trim data-line-numbers="7">
    94+
    from selenium.webdriver.common.by import By
    95+
    from selenium.webdriver.support import expected_conditions
    96+
    from selenium.webdriver.support.wait import WebDriverWait
    97+
    98+
    WebDriverWait(self.browser, 10).until(
    99+
    expected_conditions.presence_of_element_located(
    100+
    (By.CSS_SELECTOR, QuotesPageLocators.TAG_DROPDOWN_VALUE_OPTION)
    101+
    )
    102+
    )
    103+
    </code></pre>
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    </section>
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    <section data-transition="slide-in none">
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    <h1>Locators using By</h1>
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    <pre><code data-trim data-line-numbers="3,8">
    109+
    from selenium.webdriver.common.by import By
    110+
    111+
    TAG_DROPDOWN = "select#tag"
    112+
    JUST_ID = By.ID, "tag"
    113+
    114+
    ...
    115+
    116+
    self.browser.find_element_by_css_selector(TAG_DROPDOWN)
    117+
    self.browser.find_element(By.CSS_SELECTOR, TAG_DROPDOWN)
    118+
    119+
    self.browser.find_element_by_id("tag")
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    self.browser.find_element(By.ID, "tag")
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    self.browser.find_element(*JUST_ID)
    122+
    </code></pre>
    123+
    </section>
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    125+
    <section data-transition="none">
    126+
    <h1>Locators using By</h1>
    127+
    <pre><code data-trim data-line-numbers="3,9">
    128+
    from selenium.webdriver.common.by import By
    129+
    130+
    TAG_DROPDOWN = "select#tag"
    131+
    JUST_ID = By.ID, "tag"
    132+
    133+
    ...
    134+
    135+
    self.browser.find_element_by_css_selector(TAG_DROPDOWN)
    136+
    self.browser.find_element(By.CSS_SELECTOR, TAG_DROPDOWN)
    137+
    138+
    self.browser.find_element_by_id("tag")
    139+
    self.browser.find_element(By.ID, "tag")
    140+
    self.browser.find_element(*JUST_ID)
    141+
    </code></pre>
    142+
    </section>
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    144+
    <section data-transition="none">
    145+
    <h1>Locators using By</h1>
    146+
    <pre><code data-trim data-line-numbers="4, 11-13">
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    from selenium.webdriver.common.by import By
    148+
    149+
    TAG_DROPDOWN = "select#tag"
    150+
    JUST_ID = By.ID, "tag"
    151+
    152+
    ...
    153+
    154+
    self.browser.find_element_by_css_selector(TAG_DROPDOWN)
    155+
    self.browser.find_element(By.CSS_SELECTOR, TAG_DROPDOWN)
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    157+
    self.browser.find_element_by_id("tag")
    158+
    self.browser.find_element(By.ID, "tag")
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    self.browser.find_element(*JUST_ID)
    160+
    </code></pre>
    161+
    </section>
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    <section>
    164+
    <h1>Other uses of By</h1>
    165+
    <pre><code data-trim>
    166+
    ID = "id"
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    XPATH = "xpath"
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    LINK_TEXT = "link text"
    169+
    PARTIAL_LINK_TEXT = "partial link text"
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    NAME = "name"
    171+
    TAG_NAME = "tag name"
    172+
    CLASS_NAME = "class name"
    173+
    CSS_SELECTOR = "css selector"
    174+
    </code></pre>
    175+
    </section>
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    177+
    <section>
    178+
    <h1>Implicit waits</h1>
    179+
    <pre><code data-trim data-line-numbers="4">
    180+
    from selenium import webdriver
    181+
    182+
    driver = webdriver.Chrome()
    183+
    driver.implicitly_wait(10) # seconds
    184+
    </code></pre>
    185+
    </section>
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    </div>
    187+
    </div>
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    <script src="../js/reveal.js"></script>
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    <script>
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    // More info about config & dependencies:
    193+
    // - https://github.com/hakimel/reveal.js#configuration
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    // - https://github.com/hakimel/reveal.js#dependencies
    195+
    Reveal.initialize({
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    width: "100%",
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    height: "100%",
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    margin: 0,
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    dependencies: [
    200+
    { src: "../plugin/markdown/marked.js" },
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    { src: "../plugin/markdown/markdown.js" },
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    { src: "../plugin/notes/notes.js", async: true },
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    { src: "../plugin/highlight/highlight.js", async: true }
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    ]
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    });
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    </script>
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    </body>
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    </html>

    ‎course_contents/12_browser_automation_selenium/lectures/11_adding_waits_to_our_code/pages/quotes_page.py

    Lines changed: 3 additions & 2 deletions
    Original file line numberDiff line numberDiff line change
    @@ -1,3 +1,4 @@
    1+
    import time
    12
    from typing import List
    23
    from selenium.webdriver.common.by import By
    34
    from selenium.webdriver.support import expected_conditions
    @@ -60,8 +61,8 @@ def search_for_quotes(self, author_name: str, tag_name: str) -> List[QuoteParser
    6061
    )
    6162
    )
    6263

    63-
    # Alternatively, implicit wait
    64-
    self.browser.implicitly_wait(10)
    64+
    # Alternatively, explicit wait
    65+
    time.sleep(10)
    6566

    6667
    try:
    6768
    self.select_tag(tag_name)

    ‎course_contents/12_browser_automation_selenium/lectures/1_our_scraping_code/locators/quotes_page_locators.py

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    Original file line numberDiff line numberDiff line change
    @@ -1,5 +1,2 @@
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    class QuotesPageLocators:
    22
    QUOTE = "div.quote"
    3-
    AUTHOR_DROPDOWN = "select#author"
    4-
    TAG_DROPDOWN = "select#tag"
    5-
    SEARCH_BUTTON = 'input[name="submit_button"]'

    ‎course_contents/12_browser_automation_selenium/lectures/3_using_chrome_in_scraping_code/locators/quotes_page_locators.py

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    @@ -1,2 +1,2 @@
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    class QuotesPageLocators:
    2-
    QUOTE = 'div.quote'
    2+
    QUOTE = "div.quote"

    ‎course_contents/12_browser_automation_selenium/lectures/5_interacting_with_dropdowns/pages/quotes_page.py

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    Original file line numberDiff line numberDiff line change
    @@ -1,3 +1,4 @@
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    from typing import List
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    from selenium.webdriver.support.ui import Select
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    34
    from locators.quotes_page_locators import QuotesPageLocators

    ‎course_contents/12_browser_automation_selenium/lectures/9_adding_some_error_handling/app.py

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    Original file line numberDiff line numberDiff line change
    @@ -13,5 +13,6 @@
    1313
    print(page.search_for_quotes(author, tag))
    1414
    except InvalidTagForAuthorError as e:
    1515
    print(e)
    16-
    except Exception:
    16+
    except Exception as e:
    17+
    print(e)
    1718
    print("An unknown error occurred. Please try again.")

    ‎course_contents/16_interacting_with_apis/lectures/3_getting_all_exchange_rates/code.py

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    @@ -0,0 +1,12 @@
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    import requests
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    3+
    APP_ID = "c640347fae594fc5add36046c807b282"
    4+
    ENDPOINT = "https://openexchangerates.org/api/latest.json"
    5+
    6+
    response = requests.get(f"{ENDPOINT}?app_id={APP_ID}")
    7+
    exchange_rates = response.json()
    8+
    9+
    usd_amount = 1000
    10+
    gbp_amount = usd_amount * exchange_rates["rates"]["GBP"]
    11+
    12+
    print(f"USD{usd_amount} is GBP{gbp_amount}")

    ‎course_contents/16_interacting_with_apis/lectures/4_creating_a_currency_exchange_library/app.py

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    Original file line numberDiff line numberDiff line change
    @@ -0,0 +1,10 @@
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    from libs.openexchange import OpenExchangeClient
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    APP_ID = "72dba35060b54cf9ad3ffbdc68de9174"
    4+
    5+
    client = OpenExchangeClient(APP_ID)
    6+
    7+
    usd_amount = 1000
    8+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    9+
    10+
    print(f"USD{usd_amount} is GBP{gbp_amount}")

    ‎course_contents/16_interacting_with_apis/lectures/4_creating_a_currency_exchange_library/libs/__init__.py

    Whitespace-only changes.

    ‎course_contents/16_interacting_with_apis/lectures/4_creating_a_currency_exchange_library/libs/openexchange.py

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    import requests
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    import functools
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    class OpenExchangeClient:
    6+
    BASE_URL = "https://openexchangerates.org/api/"
    7+
    8+
    def __init__(self, app_id):
    9+
    self.app_id = app_id
    10+
    11+
    @property
    12+
    def latest(self):
    13+
    return requests.get(f"{self.BASE_URL}/latest.json?app_id={self.app_id}").json()
    14+
    15+
    def convert(self, from_amount, from_currency, to_currency):
    16+
    rates = self.latest['rates']
    17+
    to_rate = rates[to_currency]
    18+
    19+
    if from_currency == 'USD':
    20+
    return from_amount * to_rate
    21+
    else:
    22+
    from_in_usd = from_amount / rates[from_currency]
    23+
    return from_in_usd * to_rate
    24+

    ‎course_contents/16_interacting_with_apis/lectures/5_caching_with_cachetools/app.py

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    Original file line numberDiff line numberDiff line change
    @@ -0,0 +1,28 @@
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    from libs.openexchange import OpenExchangeClient
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    import time
    3+
    4+
    5+
    6+
    APP_ID = "72dba35060b54cf9ad3ffbdc68de9174"
    7+
    8+
    client = OpenExchangeClient(APP_ID)
    9+
    10+
    usd_amount = 1000
    11+
    start = time.time()
    12+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    13+
    print(f'First call took {time.time() - start} seconds.')
    14+
    15+
    start = time.time()
    16+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    17+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    18+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    19+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    20+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    21+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    22+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    23+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    24+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    25+
    gbp_amount = client.convert(usd_amount, 'USD', 'GBP')
    26+
    print(f'After, 10 calls took {time.time() - start} seconds.')
    27+
    28+
    print(f"USD{usd_amount} is GBP{gbp_amount}")

    ‎course_contents/16_interacting_with_apis/lectures/5_caching_with_cachetools/libs/__init__.py

    Whitespace-only changes.

    ‎course_contents/16_interacting_with_apis/lectures/5_caching_with_cachetools/libs/openexchange.py

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    Original file line numberDiff line numberDiff line change
    @@ -0,0 +1,25 @@
    1+
    import requests
    2+
    from cachetools import cached, TTLCache
    3+
    4+
    5+
    class OpenExchangeClient:
    6+
    BASE_URL = "https://openexchangerates.org/api/"
    7+
    8+
    def __init__(self, app_id):
    9+
    self.app_id = app_id
    10+
    11+
    @property
    12+
    @cached(cache=TTLCache(maxsize=2, ttl=900))
    13+
    def latest(self):
    14+
    return requests.get(f"{self.BASE_URL}/latest.json?app_id={self.app_id}").json()
    15+
    16+
    def convert(self, from_amount, from_currency, to_currency):
    17+
    rates = self.latest['rates']
    18+
    to_rate = rates[to_currency]
    19+
    20+
    if from_currency == 'USD':
    21+
    return from_amount * to_rate
    22+
    else:
    23+
    from_in_usd = from_amount / rates[from_currency]
    24+
    return from_in_usd * to_rate
    25+

    ‎course_contents/16_interacting_with_apis/lectures/6_functools_lru_cache/code.py

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    Original file line numberDiff line numberDiff line change
    @@ -0,0 +1,18 @@
    1+
    import functools
    2+
    import time
    3+
    4+
    5+
    @functools.lru_cache(2)
    6+
    def cached_function(value):
    7+
    for i in range(value):
    8+
    i ** value
    9+
    10+
    11+
    def timed():
    12+
    start = time.time()
    13+
    cached_function(4647)
    14+
    print(time.time() - start)
    15+
    16+
    17+
    timed()
    18+
    timed()

    ‎course_contents/19_gui_development_tkinter/lectures/10_saving_files/app.py

    Lines changed: 3 additions & 3 deletions
    Original file line numberDiff line numberDiff line change
    @@ -7,7 +7,6 @@ def create_file():
    77
    text_area.pack(fill="both", expand=True)
    88

    99
    notebook.add(text_area, text="Untitled")
    10-
    notebook.pack(fill="both", expand=True)
    1110
    notebook.select(text_area)
    1211

    1312

    @@ -16,8 +15,8 @@ def save_file():
    1615

    1716
    try:
    1817
    filename = file_path.split("/")[-1]
    19-
    current = root.nametowidget(notebook.select())
    20-
    content = current.get("1.0", "end-1c")
    18+
    text_widget = root.nametowidget(notebook.select())
    19+
    content = text_widget.get("1.0", "end-1c")
    2120

    2221
    with open(file_path, "w") as file:
    2322
    file.write(content)
    @@ -47,6 +46,7 @@ def save_file():
    4746
    file_menu.add_command(label="Save", command=save_file)
    4847

    4948
    notebook = ttk.Notebook(main)
    49+
    notebook.pack(fill="both", expand=True)
    5050

    5151
    create_file()
    5252

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