Python Toolkit
sum.py
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with open("data.txt") as f:
numsum = sum(float(x) for line in f for x in line.split())
print "", numsum
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number of lines in file "data.txt"
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with open("data.txt") as f:
num_lines = sum(1 for line in f) # num_lines = sum(1 for line in open("data.txt"))
print "", num_lines
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