Why does NameError: Name ‘plot_cases_simple’ is Not Defined Occur?
Below are some of the reasons due to why NameError: Name ‘plot_cases_simple’ is Not Defined occurs in Python:
- Undefined Variable
- Incorrect Scope
- Typos or Case Sensitivity
Undefined Variable
The most straightforward reason is that you have not defined the variable or function plot_cases_simple in your code before attempting to use it.
Python3
# Plot_Cases_Simple is not defined hereprint(plot_cases_simple) # This will raise a NameError |
Output:
Hangup (SIGHUP)
Traceback (most recent call last):
File "Solution.py", line 2, in <module>
print(Plot_Cases_Simple) # This will raise a NameError
NameError: name 'plot_cases_simple' is not defined
Incorrect Scope
If plot_cases_simple is defined inside a function or a conditional block, trying to access it outside that scope will result in a NameError.
Python3
def my_function(): plot_cases_simple = 42 print(plot_cases_simple) # This will raise a NameError |
Output:
Hangup (SIGHUP)
Traceback (most recent call last):
File "Solution.py", line 4, in <module>
print(Plot_Cases_Simple) # This will raise a NameError
NameError: name 'plot_cases_simple' is not defined
Typos or Case Sensitivity
Check for typos in the variable or function name. Python is case-sensitive, so plot_cases_simple and plot_cases_simple are treated as distinct entities.
Python3
# Correct usageplot_case_simple = 42print(plot_cases_simple) |
Output:
Hangup (SIGHUP)
Traceback (most recent call last):
File "Solution.py", line 3, in <module>
print(Plot_Case_Simple)
NameError: name 'plot_cases_simple' is not defined
Nameerror: Name Plot_Cases_Simple Is Not Defined in Python
Python, being a dynamically typed language, often encounters the “NameError: name ‘plot_cases_simple’ is not defined.” This error arises when you attempt to use a variable or function that Python cannot recognize in the current scope. In this article, we will explore the meaning of this error, understand why it occurs, and provide solutions to rectify it.
What is NameError: Name ‘plot_cases_simple’ is Not Defined?
The NameError is a common exception in Python, signaling that a variable or function with the specified name is not defined in the current scope. In the context of “Name ‘plot_cases_simple’ is not defined,” it indicates that Python cannot find a reference to the variable or function plot_cases_simple where it is being used.