10000 Working with JSON data · neryuuk/learning-python@4370ae0 · GitHub
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Working with JSON data
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‎Ch5 - Internet Data/jsondata_finished.py

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‎Ch5 - Internet Data/jsondata_start.py

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#
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# Example file for parsing and processing JSON
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# LinkedIn Learning Python course by Joe Marini
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#
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import urllib.request
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import json
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import urllib.request
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def printResults(data):
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# Use the json module to load the string data into a dictionary
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theJSON = json.loads(data)
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content = json.loads(data)
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# now we can access the contents of the JSON like any other Python object
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if "metadata" in content and "title" in content["metadata"]:
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print(content["metadata"]["title"])
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print("---------------------------------------------\n")
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# output the number of events, plus the magnitude and each event name
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# output the number of events, plus the magnitude and each event name
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if "metadata" in content and "count" in content["metadata"]:
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print("{} event(s) recorded".format(content["metadata"]["count"]))
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print("---------------------------------------------\n")
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# for each event, print the place where it occurred
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if "features" in content:
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for event in content["features"]:
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if "properties" in event and "place" in event["properties"]:
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print(event["properties"]["place"])
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print("---------------------------------------------\n")
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# print the events that only have a magnitude greater than 4
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print("Events with magnitude greater than 4:\n")
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if "features" in content:
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for event in content["features"]:
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if "properties" in event and "mag" in event["properties"] and event["properties"]["mag"] > 4:
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print("{}, Magnitude {}".format(
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event["properties"]["place"],
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event["properties"]["mag"]
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))
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print("---------------------------------------------\n")
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# print only the events where at least 1 person reported feeling something
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print("Events that were felt by someone:\n")
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if "features" in content:
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for event in content["features"]:
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if "properties" in event and "felt" in event["properties"]:
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felt = event["properties"]["felt"]
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if felt and int(felt) > 0:
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print("{}, felt {} time{}".format(
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event["properties"]["place"],
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felt,
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"s" if felt > 1 else ""
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))
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print("---------------------------------------------\n")
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def main():
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# define a variable to hold the source URL
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# In this case we'll use the free data feed from the USGS
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# This feed lists all earthquakes for the last day larger than Mag 2.5
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urlData = "http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson"
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url = "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson"
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try:
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# Open the URL and read the data
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website = urllib.request.urlopen(url)
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httpStatus = website.getcode()
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print("GET {} {}".format(url, httpStatus))
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if httpStatus == 200:
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printResults(website.read())
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else:
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print("Received HTTP status {} from the server.".format(httpStatus))
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except Exception as e:
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print("Error opening website {}:\n{}".format(url, e))
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# Open the URL and read the data
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webUrl = urllib.request.urlopen(urlData)
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print ("result code: " + str(webUrl.getcode()))
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if __name__ == "__main__":
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main()

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