Course Content

Data Types in Python

1. Getting Familiar With Numbers in Python

Understanding Numerical Data Types in Python Mutable or Immutable?Mastering Integer Numbers in Python Fundamentals of Basic Math Operations in Python Deep Dive into Advanced Math Techniques in Python Challenge: Time Calculation in Python How to Define a Type

2. Mastering Boolean Logic in Python

Introduction to Boolean Data Type Challenge: Practice with Logical Statements Python Logical Operators Challenge: Boosting Logical Skills Challenge: The Not Statement Challenge: Logical Statements Priorities

3. Python String Manipulation

Print Your String Quotation Marks String Indexing in Python Slice the Word Negative Indexation Slice the Phrase Slicing Task How to Find the String Length Get the Index of the Symbol Find the Word Index Challenge: Slicing with Index Function Is String Mutable?Merge Strings

4. Bring All the Topics Together

Convert Types Useful Converting Converting: float()Converting: bool()Converting: str()Math in Strings Compare Strings

Quotation Marks

Strings can be enclosed in either single quotes ('...') or double quotes ("..."). However, if you need to use quotes inside your string, you must be careful to avoid syntax errors.


              123
            
# This will raise a syntax error due to the apostrophe inside single quotes
transaction_note = 'Today's payment was delayed'
print(transaction_note)

Python interprets the apostrophe ' in "Today's" as the end of the string, which causes confusion in the rest of the line.

Correct Ways to Use Quotes Within Strings

Use double quotes outside if the string contains an apostrophe:


              123
            
# Using double quotes allows us to include an apostrophe safely
transaction_note = "Today's payment was delayed"
print(transaction_note)

Use single quotes outside if the string contains double quotes:


              123
            
# Using single quotes to include a quote in the text
audit_remark = 'The client said: "We will send the invoice tomorrow."'
print(audit_remark)

Use triple quotes to include both types of quotation marks

Triple quotes ('''...''' or """...""") are often used for multi-line text, but they are also useful when a string contains both single and double quotes:


              123
            
# Triple quotes allow both single and double quotation marks
financial_summary = """Today's report includes the note: "Check the 'Q1' revenue drop." """
print(financial_summary)

Practical Accounting Example


              1234567891011
            
# Correct use of quotes to log an accountant's comment
comment = "The accountant's note: 'Double-check the tax deduction before approval.'"
print(comment)

# Using triple quotes to format a longer, multi-line report comment
report_comment = """
Manager's instructions:
- Review the 'Accounts Receivable' section.
- Confirm with the accountant: "Is the write-off policy still valid?"
"""
print(report_comment)

This approach ensures your strings are syntactically correct and improves code readability, especially when working with real-world financial data that may include quotations in documentation or remarks.

Task

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The sentence below contains both single quotes and regular text. To make it a valid string in Python, add the correct quotation marks around the sentence. You can use one of the methods described earlier (double quotes outside, or triple quotes).

Solution

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Section 3. Chapter 2

Quotation Marks

Strings can be enclosed in either single quotes ('...') or double quotes ("..."). However, if you need to use quotes inside your string, you must be careful to avoid syntax errors.


              123
            
# This will raise a syntax error due to the apostrophe inside single quotes
transaction_note = 'Today's payment was delayed'
print(transaction_note)

Python interprets the apostrophe ' in "Today's" as the end of the string, which causes confusion in the rest of the line.

Correct Ways to Use Quotes Within Strings

Use double quotes outside if the string contains an apostrophe:


              123
            
# Using double quotes allows us to include an apostrophe safely
transaction_note = "Today's payment was delayed"
print(transaction_note)

Use single quotes outside if the string contains double quotes:


              123
            
# Using single quotes to include a quote in the text
audit_remark = 'The client said: "We will send the invoice tomorrow."'
print(audit_remark)

Use triple quotes to include both types of quotation marks

Triple quotes ('''...''' or """...""") are often used for multi-line text, but they are also useful when a string contains both single and double quotes:


              123
            
# Triple quotes allow both single and double quotation marks
financial_summary = """Today's report includes the note: "Check the 'Q1' revenue drop." """
print(financial_summary)

Practical Accounting Example


              1234567891011
            
# Correct use of quotes to log an accountant's comment
comment = "The accountant's note: 'Double-check the tax deduction before approval.'"
print(comment)

# Using triple quotes to format a longer, multi-line report comment
report_comment = """
Manager's instructions:
- Review the 'Accounts Receivable' section.
- Confirm with the accountant: "Is the write-off policy still valid?"
"""
print(report_comment)

Task

Swipe to start coding

Solution

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 3. Chapter 2

Switch to desktop for real-world practiceContinue from where you are using one of the options below