several fixes for higher quality of jupyterbook

[spirosChv]

1. W1D3 T1: fix error produced when running on cuda
2. W1D5 T1: correct a solution to an exercise (remove redundant comments)
3. W2D4 T3: make optional a generation of an image to avoid CUDA memory allocation error during the book generation process
4. W2D5 T1, T2 & W3D1 T1: small fixes (text)

[github-actions[bot]]

W1D3_Tutorial1	W1D5_Tutorial1	W2D4_Tutorial3	W2D5_Tutorial1	W2D5_Tutorial2	W3D1_Tutorial1
Instructor
Student

Code report for W1D3_Tutorial1

Code report for W1D3_Tutorial1.ipynb ==================================== Quality (pyflakes) ------------------ Total code issues: 0 Style (pycodestyle) ------------------- Total PEP8 violations: 188 Common problems: - 38 instances of E402 (module level import not at top of file) - 36 instances of E226 (missing whitespace around arithmetic operator) - 26 instances of E261 (at least two spaces before inline comment) - 12 instances of E266 (too many leading '#' for block comment) - 11 instances of E302 (expected 2 blank lines, found 0) - 8 instances of E303 (too many blank lines (3)) - 6 instances of E501 (line too long (100 > 88 characters)) - 6 instances of E228 (missing whitespace around modulo operator) - 5 instances of E302 (expected 2 blank lines, found 1) - 5 instances of E703 (statement ends with a semicolon) ---

Code report for W1D5_Tutorial1

Code report for W1D5_Tutorial1.ipynb ==================================== Quality (pyflakes) ------------------ Total code issues: 0 Style (pycodestyle) ------------------- Total PEP8 violations: 184 Common problems: - 56 instances of E402 (module level import not at top of file) - 13 instances of E266 (too many leading '#' for block comment) - 10 instances of E302 (expected 2 blank lines, found 1) - 9 instances of E302 (expected 2 blank lines, found 0) - 9 instances of E501 (line too long (100 > 88 characters)) - 9 instances of E703 (statement ends with a semicolon) - 8 instances of E231 (missing whitespace after ':') - 7 instances of E305 (expected 2 blank lines after class or function definition, found 0) - 5 instances of E501 (line too long (91 > 88 characters)) - 5 instances of E501 (line too long (89 > 88 characters)) ---

Code report for W2D4_Tutorial3

Code report for W2D4_Tutorial3.ipynb ==================================== Quality (pyflakes) ------------------ Total code issues: 0 Style (pycodestyle) ------------------- Total PEP8 violations: 152 Common problems: - 37 instances of E402 (module level import not at top of file) - 15 instances of E266 (too many leading '#' for block comment) - 11 instances of E231 (missing whitespace after ',') - 10 instances of E302 (expected 2 blank lines, found 0) - 7 instances of E128 (continuation line under-indented for visual indent) - 7 instances of E731 (do not assign a lambda expression, use a def) - 5 instances of E302 (expected 2 blank lines, found 1) - 5 instances of E305 (expected 2 blank lines after class or function definition, found 0) - 5 instances of W605 (invalid escape sequence '\s') - 4 instances of E501 (line too long (100 > 88 characters)) ---

Code report for W2D5_Tutorial1

Code report for W2D5_Tutorial1.ipynb ==================================== Quality (pyflakes) ------------------ Total code issues: 0 Style (pycodestyle) ------------------- Total PEP8 violations: 187 Common problems: - 62 instances of E402 (module level import not at top of file) - 14 instances of E251 (unexpected spaces around keyword / parameter equals) - 11 instances of E302 (expected 2 blank lines, found 0) - 11 instances of E302 (expected 2 blank lines, found 1) - 8 instances of E501 (line too long (100 > 88 characters)) - 6 instances of E266 (too many leading '#' for block comment) - 5 instances of E305 (expected 2 blank lines after class or function definition, found 0) - 5 instances of E703 (statement ends with a semicolon) - 4 instances of E305 (expected 2 blank lines after class or function definition, found 1) - 4 instances of E501 (line too long (95 > 88 characters)) ---

Code report for W2D5_Tutorial2

Code report for W2D5_Tutorial2.ipynb ==================================== Quality (pyflakes) ------------------ Total code issues: 0 Style (pycodestyle) ------------------- Total PEP8 violations: 155 Common problems: - 46 instances of E402 (module level import not at top of file) - 15 instances of E203 (whitespace before ':') - 8 instances of E501 (line too long (91 > 88 characters)) - 7 instances of E302 (expected 2 blank lines, found 1) - 7 instances of E225 (missing whitespace around operator) - 7 instances of E226 (missing whitespace around arithmetic operator) - 5 instances of E501 (line too long (100 > 88 characters)) - 5 instances of E305 (expected 2 blank lines after class or function definition, found 1) - 3 instances of E302 (expected 2 blank lines, found 0) - 3 instances of E501 (line too long (89 > 88 characters)) ---

Code report for W3D1_Tutorial1

Code report for W3D1_Tutorial1.ipynb ==================================== Quality (pyflakes) ------------------ Total code issues: 0 Style (pycodestyle) ------------------- Total PEP8 violations: 120 Common problems: - 57 instances of E402 (module level import not at top of file) - 8 instances of E302 (expected 2 blank lines, found 1) - 6 instances of E501 (line too long (100 > 88 characters)) - 4 instances of E302 (expected 2 blank lines, found 0) - 4 instances of E305 (expected 2 blank lines after class or function definition, found 1) - 4 instances of E305 (expected 2 blank lines after class or function definition, found 0) - 4 instances of E731 (do not assign a lambda expression, use a def) - 3 instances of E501 (line too long (95 > 88 characters)) - 3 instances of E501 (line too long (89 > 88 characters)) - 2 instances of E401 (multiple imports on one line) ---