How to fix NameError: name 'start_time' is not defined. Define the variable ... in Python

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We're excited to share with you our newest video, "How to solve NameError: name 'start_time' is not defined. Define the variable 'start_time' before using it. in Python". 🎥 This series is meticulously designed to arm you with knowledge 🧠 and skills 🛠️ to overcome frequent coding challenges.

Today, we will decipher 🔎 and resolve a common error faced by Python coders: the bit hard to solve NameError: name 'start_time' is not defined. Define the variable 'start_time' before using it.. Here is a snapshot of the code of the video:

Troubling Scenario: ❗️

print(start_time)

Unwanted Result: 🚫
NameError: name 'start_time' is not defined. Define the variable 'start_time' before using it.

Effective Resolution: ✔️

start_time = "10:00"
print(start_time)

Desired Output: 🏁
10:00

In this detailed walkthrough, we will illuminate 💡 the underlying cause of this error, and offer a comprehensive explanation: In Code1, 'start_time' is printed without being defined, causing a NameError. In Code2, 'start_time' is defined before printing, correcting the error by defining the variable before its usage. 🎯

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