Hi,

I just ran into the following hiccup: Printing json data can be VERY slow. It took about 45 seconds to print a json structure imported from a file about 1.2 Kbytes large (1239 bytes, to be precise). This is something that might deserve a warning, somehow?

Thanks a lot,

Holger

timeit.timeit('import json', number=3)
6.115995347499847e-06
timeit.timeit('import json; json.load(open("bla.json"))', number=3)
0.0003211210132576525
timeit.timeit('import json; print(json.load(open("bla.json")))', number=3)
{'metadata': {'kernelspec': {'language': 'c', 'name': 'c', 'display_name': 'C'}, 'language_info': {'file_extension': '.
c', 'name': 'c', 'mimetype': 'text/plain'}, 'celltoolbar': 'Create Assignment'}, 'nbformat_minor': 2, 'cells': [{'metad
ata': {'nbgrader': {'schema_version': 1, 'grade_id': 'cell-fbe773322fcd8530', 'grade': True, 'locked': False, 'points':
0, 'solution': True}}, 'cell_type': 'markdown', 'source': ['12345 2365 8899']}, {'metadata': {}, 'cell_type': 'markdow
n', 'source': ['# Test for a C -based assignment ']}, {'execution_count': None, 'metadata': {'nbgrader': {'schema_versi
on': 1, 'locked': False, 'grade_id': 'cell-472e432b19c0c2ae', 'grade': False, 'solution': True}}, 'source': ['#include
<stdio.h>\n', '\n', 'int main() {\n', ' // BEGIN SOLUTION\n', ' printf("hallo\n");\n', ' // END SOLUTION\n',
'}'], 'cell_type': 'code', 'outputs': []}, {'execution_count': None, 'metadata': {}, 'source': [], 'cell_type': 'code',
'outputs': []}], 'nbformat': 4}
{'metadata': {'kernelspec': {'language': 'c', 'name': 'c', 'display_name': 'C'}, 'language_info': {'file_extension': '.
c', 'name': 'c', 'mimetype': 'text/plain'}, 'celltoolbar': 'Create Assignment'}, 'nbformat_minor': 2, 'cells': [{'metad
ata': {'nbgrader': {'schema_version': 1, 'grade_id': 'cell-fbe773322fcd8530', 'grade': True, 'locked': False, 'points':
0, 'solution': True}}, 'cell_type': 'markdown', 'source': ['12345 2365 8899']}, {'metadata': {}, 'cell_type': 'markdow
n', 'source': ['# Test for a C -based assignment ']}, {'execution_count': None, 'metadata': {'nbgrader': {'schema_versi
on': 1, 'locked': False, 'grade_id': 'cell-472e432b19c0c2ae', 'grade': False, 'solution': True}}, 'source': ['#include
<stdio.h>\n', '\n', 'int main() {\n', ' // BEGIN SOLUTION\n', ' printf("hallo\n");\n', ' // END SOLUTION\n',
'}'], 'cell_type': 'code', 'outputs': []}, {'execution_count': None, 'metadata': {}, 'source': [], 'cell_type': 'code',
'outputs': []}], 'nbformat': 4}
{'metadata': {'kernelspec': {'language': 'c', 'name': 'c', 'display_name': 'C'}, 'language_info': {'file_extension': '.
c', 'name': 'c', 'mimetype': 'text/plain'}, 'celltoolbar': 'Create Assignment'}, 'nbformat_minor': 2, 'cells': [{'metad
ata': {'nbgrader': {'schema_version': 1, 'grade_id': 'cell-fbe773322fcd8530', 'grade': True, 'locked': False, 'points':
0, 'solution': True}}, 'cell_type': 'markdown', 'source': ['12345 2365 8899']}, {'metadata': {}, 'cell_type': 'markdow
n', 'source': ['# Test for a C -based assignment ']}, {'execution_count': None, 'metadata': {'nbgrader': {'schema_versi
on': 1, 'locked': False, 'grade_id': 'cell-472e432b19c0c2ae', 'grade': False, 'solution': True}}, 'source': ['#include
<stdio.h>\n', '\n', 'int main() {\n', ' // BEGIN SOLUTION\n', ' printf("hallo\n");\n', ' // END SOLUTION\n',
'}'], 'cell_type': 'code', 'outputs': []}, {'execution_count': None, 'metadata': {}, 'source': [], 'cell_type': 'code',
'outputs': []}], 'nbformat': 4}
47.67986440501409