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Janne Jensen
Seminar Problemorientierte Programmierung
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1e5c3d3f
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1e5c3d3f
authored
6 years ago
by
Prof. Dr. Robert Jäschke
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Beispiel-Muster vereinfacht
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notebooks/uebung_regex.ipynb
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@@ -21,7 +21,7 @@
"Ändern Sie den folgenden regulären Ausdruck, so dass alle \n",
"positiven Muster erkannt werden, aber kein negatives Muster.\n",
"\"\"\"\n",
"muster = re.compile(\"
ap.*t
\") \n",
"muster = re.compile(\"
\") \n",
"positive = [\n",
" \"rap them\",\n",
" \"tapeth\",\n",
...
...
%% Cell type:markdown id: tags:
# 12. Übungsblatt
Mit diesem Python-Code können Sie Ihren regulären Ausdruck testen:
%% Cell type:code id: tags:
```
import re
"""
Ändern Sie den folgenden regulären Ausdruck, so dass alle
positiven Muster erkannt werden, aber kein negatives Muster.
"""
muster = re.compile("
ap.*t
")
muster = re.compile("
")
positive = [
"rap them",
"tapeth",
"apth",
"wrap/try",
"sap tray",
"87ap9th",
"apothecary"
]
negative = [
"aleht",
"happy them",
"tarpth",
"Apt",
"peth",
"tarreth",
"ddapdg",
"apples",
"shape the"
]
# testen, ob alle positiven Muster richtig erkannt werden
positive_not_matched = [s for s in positive if not muster.findall(s)]
if positive_not_matched:
print("Folgende positive Muster wurden nicht erkannt:", ", ".join(positive_not_matched))
# testen, ob keine negativen Muster erkannt werden
negative_matched = [s for s in negative if muster.findall(s)]
if negative_matched:
print("Folgende negativen Muster wurden erkannt:", ", ".join(negative_matched))
```
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