[英]printing an array in python columnwise
我正在嘗試添加如下所示的數組
# N Mn Fe x x2
3.94870000e+01 -1.22950000e-07 -1.65130000e-05 6.40000000e-01 0.00000000e+00
3.95040000e+01 -9.38580000e-07 -1.63070000e-05 6.41000000e-01 0.00000000e+00
3.95130000e+01 -1.67100000e-06 -1.59280000e-05 6.42000000e-01 0.00000000e+00
3.95230000e+01 -2.29230000e-06 -1.53800000e-05 6.43000000e-01 0.00000000e+00
我設法編寫的代碼確實添加了Mn
和Fe
列,但尚未設法將其寫為:
# N Mn Fe Res
我寫的代碼是:
#!/usr/bin/env python3
# encoding: utf-8
import numpy as np
inp = "ec.dat"
out = "ec2.dat"
N, Mn, Fe, x, x2 = np.loadtxt(inp, unpack=True)
res = Mn+Fe
print(N, res)
# with open("ec2.dat", 'a') as outfile:
有人能幫我正確地寫桌子嗎? 問候,
編輯 @Paul,謝謝。 現在完整的代碼是:
#!/usr/bin/env python3
# encoding: utf-8
import numpy as np
inp = "ec.dat"
out = "ec2.dat"
N, Mn, Fe, x, x2 = np.loadtxt(inp, unpack=True)
res = Mn+Fe
with open("ec2.dat", "w") as of:
for n, mn, fe, res in zip(N, Mn, Fe, res):
s = "%e %e\n" % (n, res)
of.write(s)
我將向您展示各個部分,而不是將答案匯總在一起,以便您自己進行研究。
要同時迭代多個numpy數組,可以執行以下操作:
for n, mn, fe, result in zip(N, Mn, Fe, res):
print "" + str(n) + " " + str(mn) +" " + str(fe) + " " + str(result)
但是,要執行所需的格式,您應該使用字符串說明符: https : //docs.python.org/2/library/string.html#format-specification-mini-language
一個例子就是
v = 1000.526
s = "%e %e\n" % (10.25, v)
print s
寫入文件非常簡單:
s = "Here is a line I will write to my file\n"
with open("ec2.dat", 'a') as outfile:
outfile.write(s)
將這些內容鏈接在一起,您應該能夠將所需的輸出打印到屏幕或文件中。
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