Electrical Rules Check (ERC) in PCB Design - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to run an Electrical Rules Check (ERC) on the PCB design.

PCB Design

erc_results = pcb_design.run_[1]()

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AERC

BDRC

CFRC

DLRC

Attempts:

3 left

💡 Hint

Common Mistakes

Using DRC instead of ERC

Typing a non-existent method name

The correct method to run an Electrical Rules Check is ERC. DRC is for Design Rules Check, which is different.

2fill in blank

medium

Complete the code to filter ERC errors by severity level.

PCB Design

critical_errors = [e for e in erc_results if e.[1] == 'Critical']

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Atype

Bseverity

Ccode

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'type' instead of 'severity'

Filtering by 'status' which is unrelated

The severity attribute indicates the seriousness of an ERC error, such as 'Critical'.

3fill in blank

hard

Fix the error in the code that summarizes ERC errors by type.

PCB Design

error_summary = [1](erc_results, key=lambda e: e.type)

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Amap

Bfilter

Cgroupby

Dreduce

Attempts:

3 left

💡 Hint

Common Mistakes

Using filter instead of groupby

Using map which transforms but does not group

The groupby function groups ERC errors by their type for summary.

4fill in blank

hard

Fill both blanks to check if any ERC error is unresolved and critical.

PCB Design

has_critical_unresolved = any(e.[1] == 'Critical' and e.[2] == False for e in erc_results)

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Aseverity

Bresolved

Cstatus

Dtype

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'status' instead of 'resolved'

Checking 'type' instead of 'severity'

We check severity for 'Critical' and resolved to be False to find unresolved critical errors.

5fill in blank

hard

Fill all three blanks to generate a report of ERC errors grouped by type and count.

PCB Design

report = [1]([2]([3], key=lambda e: e.type), key=lambda g: g[0])
error_counts = {group: len(list(items)) for group, items in report}
print(error_counts)

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Asorted

Bgroupby

Cerc_results

Dfilter

Attempts:

3 left

💡 Hint

Common Mistakes

Sorting before grouping

Using filter instead of groupby

Passing wrong data to groupby

First, group errors by type using groupby on erc_results, then sort the groups with sorted for a neat report.